Fema Electronica K Series User manual

Series K . K40-232
Display for serial protocol RS-232 ASCII
Display for ASCII protocol with RS-232 communicaons bus, with 4 digits and 20 mm digit height,
in red color. Reading range from 9999 to -1999 with decimal point. Local or remote alarm control.
‘Watchdog’ funcon and ‘bus acvity’ funcon. Standard 96 x 48 mm size (1/8 DIN). Fast access to
‘bus avity’, alarm setpoints and memory of max and min. ‘On power up’ funcon, congurable read-
ing brightness, password. Universal AC and DC power. Up to 3 oponal modules for output and con-
trol (relays, transistor, control SSR, analog outputs, Modbus RTU communicaons, RS-485 ASCII, RS-
232, ...) www.fema.es
Tel. [phone] [e-mail]
User’s Manual
ELECTRONICS FOR INDUSTRIAL AUTOMATION
PANEL METERS . SIGNAL CONVERTERS . LARGE DISPLAYS
PANEL METERS
3821r03

FEMA ELECTRÓNICA . Series K . K40-232
2
1. Panel meter K40-232
Display for ASCII protocol with RS-232 bus, in 96 x 48 mm (1/8 DIN) format
Digital panel meter, with ASCII code repeater funcon, in 96 x 48 mm
size (1/8 DIN) and 4 digits with 20 mm digit height. Reading value,
together with decimal point, are controlled via the RS-232 bus, us-
ing the ASCII protocol described in this document (see secon 1.13).
Reading up to 9999 and -1999.
Three working modes available allow to work with numbers or al-
phanumerical symbols. Alarms can be controlled directly from the
RS-232 bus or locally from the instrument.
• The ‘Process slave’ (see secon 1.2) mode works with numerical
values, and alarms are controlled locally.
• The ‘Full slave’ (see secon 1.3) mode works with numerical val-
ues, and alarms are controlled from the bus.
• The ‘Text’ (see secon 1.4) mode works with alphanumerical val-
ues, and alarms are controlled from the bus.
Bus speed congurable up to 38.400 bps and address congurable
from 1 to 31. Accepts a ‘broadcast’ funcon at address 128. ‘Watch-
dog’ funcon detects if communicaon with the master is lost.
‘Watchdog’ funcon can display a message on display and control
the acvaon of selected alarms (see secon 1.25).
Funcon ‘bus acvity’ is a ulity for troubleshoong communica-
ons (see secon 1.26). Funcon ‘On power up’ denes the alarm
state at start-up (see secon 1.28.8).
Front protecon IP65. Connecons by plug-in screw terminals. For
industrial applicaons.
• ‘Fast access’ menu to selected funcons, accessible with key UP (5)
(see secon 1.28.6)
Memory for maximum and minimum reading, password protecon,
5 brightness levels.
Index
1. Panel meter K40-232. . . . . . . . . . . . . . . . . . . . . . 2
1.1 How to order . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 ‘Process slave’ mode . . . . . . . . . . . . . . . . . . . . 3
1.3 ‘Full slave’ mode . . . . . . . . . . . . . . . . . . . . . . 3
1.4 ‘Text’ mode . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 Typical applicaon . . . . . . . . . . . . . . . . . . . . . 3
1.6 Front view . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.7 Power connecons . . . . . . . . . . . . . . . . . . . . . 4
1.8 Start up sequence . . . . . . . . . . . . . . . . . . . . . 4
1.9 Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.10 Signal connecons . . . . . . . . . . . . . . . . . . . . 4
1.11 Technical specicaons . . . . . . . . . . . . . . . . . . 5
1.12 Mechanical dimensions (mm) . . . . . . . . . . . . . . 5
1.13 ASCII protocol - Types of frames . . . . . . . . . . . . . 6
1.14 Frame structure . . . . . . . . . . . . . . . . . . . . . . 7
1.15 Frame examples . . . . . . . . . . . . . . . . . . . . . . 8
1.15.1 Frames ‘WRA’ (35) and ‘OK’ (39) . . . . . . . . . . . 8
1.15.2 Frame ‘ERR’ (38) . . . . . . . . . . . . . . . . . . . . 8
1.15.3 Frames ‘PING’ (32) and ‘PONG’ (33) . . . . . . . . . 8
1.15.4 Frames ‘RD’ (36) and ‘ANS’ (37) . . . . . . . . . . . 9
1.16 Registers in ‘Process slave’ mode . . . . . . . . . . . .10
1.17 Registers in ‘Full slave’ mode. . . . . . . . . . . . . . .10
1.18 Registers in ‘Text’ mode . . . . . . . . . . . . . . . . . 11
1.19 CRC calculaon . . . . . . . . . . . . . . . . . . . . . . 11
1.20 The ‘Alarm status’ register . . . . . . . . . . . . . . . .12
1.21 Representable characters. . . . . . . . . . . . . . . . . 12
1.22 Messages and errors . . . . . . . . . . . . . . . . . . . 13
1.23 Numerical registers : restricons . . . . . . . . . . . .14
1.24 Addresses and ‘broadcast’ . . . . . . . . . . . . . . . .14
1.25 ‘Watchdog’ funcon . . . . . . . . . . . . . . . . . . . 14
1.26 ‘Bus acvity’ funcon . . . . . . . . . . . . . . . . . . . 14
1.27 How to operate the menus. . . . . . . . . . . . . . . . 15
1.28 Conguraon menu. . . . . . . . . . . . . . . . . . . . 16
1.28.1 Inial set-up . . . . . . . . . . . . . . . . . . . . . .16
1.28.2 Bus conguraon . . . . . . . . . . . . . . . . . . . 16
1.28.3 Conguraon . . . . . . . . . . . . . . . . . . . . .17
1.28.4 Alarms in ‘Full slave’ and ‘Text’ mode . . . . . . . .17
1.28.5 Alarms in ‘Process slave’ mode. . . . . . . . . . . .18
1.28.6 Fast access . . . . . . . . . . . . . . . . . . . . . . .19
1.28.7 Super fast access . . . . . . . . . . . . . . . . . . .19
1.28.8 Menu ‘On Power Up’ . . . . . . . . . . . . . . . . . 19
1.28.9 Menu ‘Setpoint on bus’ . . . . . . . . . . . . . . . . 19
1.28.10 Menu ‘Save to E2PROM’. . . . . . . . . . . . . . .20
1.28.11 Menu ‘Key LE’ . . . . . . . . . . . . . . . . . . . . 20
1.28.12 Funcon ‘Password’ . . . . . . . . . . . . . . . . .20
1.28.13 Factory reset . . . . . . . . . . . . . . . . . . . . .20
1.28.14 Firmware version. . . . . . . . . . . . . . . . . . . 20
1.28.15 Brightness . . . . . . . . . . . . . . . . . . . . . .20
1.28.16 Access to oponal modules . . . . . . . . . . . . . 20
1.29 Factory conguraon . . . . . . . . . . . . . . . . . . .21
1.30 Full conguraon menu . . . . . . . . . . . . . . . . . 22
1.31 To access the instrument . . . . . . . . . . . . . . . . .24
1.32 Modular system . . . . . . . . . . . . . . . . . . . . . .24
1.33 Precauons on installaon . . . . . . . . . . . . . . . .25
1.34 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . .25
1.35 CE declaraon of conformity . . . . . . . . . . . . . . . 25
2. Output and control modules . . . . . . . . . . . . . . . . .26
2.1 Module R1. . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.2 Module T1. . . . . . . . . . . . . . . . . . . . . . . . . .26
2.3 Module SSR . . . . . . . . . . . . . . . . . . . . . . . . .27
2.4 Module AO . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.6 Module RTU. . . . . . . . . . . . . . . . . . . . . . . . . 28
2.5 Module S4. . . . . . . . . . . . . . . . . . . . . . . . . .28
2.7 Module S2. . . . . . . . . . . . . . . . . . . . . . . . . .29
2.8 Modules R2, R4, R6. . . . . . . . . . . . . . . . . . . . . 29
3. Other opons . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.1 Opon NBT . . . . . . . . . . . . . . . . . . . . . . . . . 30
4. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4.1 THM benchtop housing . . . . . . . . . . . . . . . . . . 31
4.2 Adapter DRA-M . . . . . . . . . . . . . . . . . . . . . . . 31
4.3 Adapter KA96 . . . . . . . . . . . . . . . . . . . . . . . .31
4.4 WME housing . . . . . . . . . . . . . . . . . . . . . . . .31
4.5 Protector KIP . . . . . . . . . . . . . . . . . . . . . . . .31

FEMA ELECTRÓNICA . Series K . K40-232
3
1.1 How to order
1.2 ‘Process slave’ mode
In ‘Full slave’ mode, display value and alarm status are controlled
through the RS-232 bus.
• Alarms - alarm status (‘on’ / ‘o’) is controlled by wring on the
alarm status register (see secon 1.20).
• Analog outputs - analog output are manually congured
through the front keypad. Analog output signal is associated to
the display value.
Display
Alarms
Analog outputs
RS-232 ASCII
K40-232 display in ‘Full slave’ mode
1.3 ‘Full slave’ mode
In ‘Process slave’ mode, the instrument receives a numerical value
though the RS-232 bus. Alarms and analog outputs are locally con-
trolled by the instrument according to the alarm conguraon and
display value.
• Alarms - alarm setpoint is manually congured through the
front keypad. Alarm acvates or deacvates according to the
setpoint value congured and the display value. Relay outputs
are associated to alarms. To enable access to setpoint registers
through the communicaons bus, enable the ‘Setpoint on bus’
funcon (see secon 1.28.9).
• Analog outputs - analog outputs are manually congured
through the front keypad. Analog output value is associated to
the display value.
Display
Alarms
Analog outputs
RS-232 ASCII
K40-232 display in ‘Process slave’ mode
In ‘Text’ mode the instrument receives a set of ASCII characters
through the RS-232 bus. Characters are not treated as a numerical
value, but as a set of individual ASCII characters. Available characters
are described in secon 1.21. Alarm status are controlled through
the RS-232 bus
• Alarms - alarm status (‘on’ / ‘o’) is controlled by wring on the
alarm status register (see secon 1.20).
• Analog outputs - analog output are not available in this mode.
Reading
Alarms
RS-232 ASCII
K40-232 display in ‘Text’ mode
1.4 ‘Text’ mode
Display of numerical values associated to the producon or industrial
processes. Display value is controlled through the RS-232 bus using
ASCII protocol. Messages are sent by the bus master, usually a PLC
or a SCADA system. Relay status can be controlled directly from the
PLC or locally from the instrument, depending on the conguraon
of the instrument.
Relay 1 Relay 2
4/20mA
(isolated)
RS-232 ASCII
1.5 Typical applicaon
K40 232
Model Power
-
Opon 1 Others
H- - -
Opon 2
-
Opon 3
-
-R1 (1 relay)
-AO (analog output)
-RTU (Modbus RTU)
-S4 (RS-485)
-S2 (RS-232)
-T1 (1 transistor)
-SSR (1 control SSR)
- (empty)
-H (85-265 Vac/dc)
-L (11/60 Vdc,
24 Vac, 48 Vac)
-NBT (no buons)
-65 (front IP65)
-G (green led)

FEMA ELECTRÓNICA . Series K . K40-232
4
Buon ‘LE’
Earth connecon - Although a
terminal is provided for earth
connecon, this connecon is
oponal. The instrument does
not need earth connecon for
correct operaon nor for com-
pliance with the security regu-
laons. ~
~+
-
8 9 0
Fuse - To comply with security regulaon 61010-1, add to the power
line a protecon fuse acng as disconnecon element, easily acces-
sible to the operator and idened as a protecon device.
Power ‘H’ fuse 250 mA me lag
Power ‘L’ fuse 400 mA me lag
1.7 Power connecons
1.6 Front view
Buon ‘UP’
Logo
Alarms
Units
Buon ‘SQ’
‘Conguraon menu’
(see secon 1.28)
‘Fast access‘
(see secon 1.28.6)
1.8 Start up sequence
Signal
(see secon 1.10)
Opon 1 Opon 2Opon 3
Power
(see secon 1.7)
Detail of the plug-in screw terminals provided with
the instrument. The instrument is provided with all
terminals needed, both male and female.
1.9 Rear view
1.10 Signal connecons
The instrument follows the sequence indicated below at start-up af-
ter a power loss :
1. alarm status according to conguraon (see secon 1.28.8)
2. start up delay according to conguraon (see secon 1.28.8)
3. all registers inialized to value ‘0’
3.1 display set to ‘0’
4. detecon of the acve working mode ‘Full slave’ or ‘Process
slave’ or ‘Text’
4.1 in ‘Full slave’ mode (see secon 1.3) and ‘Text’ mode (see
secon 1.4) the alarm state is set as explained in ‘1.’ and alarm
registers are set to ‘0’
4.2 in ‘Process slave’ mode (see secon 1.2) alarm congura-
on (setpoint, etc) is compared with display value (‘0’) and
each alarm acvates or deacvates according to the result of
the comparison
5. waits for data recepon through the communicaons bus
12345
Rx1
Rx2
Tx2
Gnd
Tx1
Note : instruments allow for serial connecon of mulple in-
struments, by using a ‘Daisy-chain’ connecon type. Frames
send from the Master to the rst instrument are received at
terminal Rx1. If the desnaon address indicated in the frame
is not that of the instrument, the instrument will retransmit
the frame through terminal Tx2 to the next instrument, and so
on. In a same way, frames received from terminal Rx2 will be
retransmied through terminal Tx1.

FEMA ELECTRÓNICA . Series K . K40-232
5
1.12 Mechanical dimensions (mm)
1.11 Technical specicaons
Protocol ASCII
Bus RS-232
Speed from 38.400 bps to 600 bps
(19.200 bps by default)
Data format 8n1, 8e1, 8o1, 8n2
Address 1 to 31
Digits
number of digits 4
led 7 segments led
color red
digit height 20 mm
Reading
maximum reading 9999
minimum reading -1999
decimal point X.X.X.X
Watchdog congurable from 1 to 120 seconds
Errors if communicaon with the ‘master’ is
lost
Power
power ‘H’ 85 to 265 Vac/dc
power ‘L’ 11 to 60 Vdc and 24/48 Vac
isolaon* 2500 Ve with power ‘H’
1500 Ve with power ‘L’
*tested for 60 sec.
consumpon <1.5 W only meter
<4.0 W meter with opons
Conguraon 3 buons front keypad
Front protecon IP65
Output and control opons relays, analog outputs, serial communi-
caons (see secon 2)
Mechanical
mounng panel
connecons plug-in screw terminal
housing material ABS, polycarbonate (V0)
weight <150 grams
front size 96 x 48 mm (1/8 DIN)
panel cut-out 92 x 44 mm
depth from panel 91 mm (including terminals)
Temperature
operaon from 0 to +50 ºC
storage from -20 to +70 ºC
warm-up me 15 minutes
Funcons included Secon
Fast access yes, congurable 1.28.6
Watchdog yes, congurable 1.25
Scroll in ‘Text’ mode 1.28.3
Remote or local alarms congurable 1.28.4 y
1.28.5
‘watchdog’ alarms congurable 1.25
‘On Power Up’ yes 1.28.8
Funcon ‘Bus acvity’ yes 1.26
Funcon ‘Setpoint on bus’ yes, in ‘Process slave’
mode 1.28.9
Memory maximum, minimum 1.28.6
Password conguraon block 1.28.12
Alarms in local mode
setpoint
double setpoint
acvaon delay
deacvaon delay
hysteresis
inverted relay
deacvaon lock
1.28.5
Display brightness 5 levels 1.28.15
Table 1 - Funcons included
44
92
Panel
cut-out
16 8
75
96
48

FEMA ELECTRÓNICA . Series K . K40-232
6
1.13 ASCII protocol - Types of frames
The ASCII protocol used denes the following types of frames :
• Frame ‘write’ (‘WR’). Idener 34. Frame to write data into a regis-
ter. The register number is indicated in the ‘REG’ byte (secon ‘Head-
er’). Bytes ‘D0’ to ‘Dn’ (secon ‘Data’) contain the data to write.
• Frame ‘write with acknowledgment’ (‘WRA’). Idener 35. Frame
to write data into a register, with acknowledgment of success. The
register number is indicated in the ‘REG’ byte (secon ‘Header’).
Bytes ‘D0’ to ‘Dn’ (secon ‘Data’) contain the data to write. The in-
strument will reply with a ‘ok’ frame (‘OK’) if the wring acon suc-
ceeded, or with a ‘error’ frame (‘ERR’) if the wring acon did not
succeed.
• Frame ‘ok’ (‘OK’). Idener 39. Informs that the acon of wring
data into a register, was successful. This is a response frame to a
‘write with acknowledgment’ frame (‘WRA’).
• Frame ‘error’ (‘ERR’). Idener 38. Informs that the data read (‘RD’)
or data write (‘WRA’) did not succeed. The error code is codied into
the ‘REG’ byte (secon ‘Header’). For a list of error codes see secon
1.22.
• Frame ‘read’ (‘RD’). Idener 36. Frame to request the data value
of a register. The register number is indicated in the ‘REG’ byte (sec-
on ‘Header’).
• Frame ‘answer’ (‘ANS’). Idener 37. Response frame containing
the requested data of a ‘read’ frame. The register number is indi-
cated inthe ‘REG’ byte (secon ‘Header’). Bytes ‘D0’ to ‘Dn’ (secon
‘Data’) contain the requested data.
• Frame ‘ping’ (‘PING’). Idener 32. Frame ‘ping’ is a request of
existence to the remote instrument. The remote instrument will an-
swer with a ‘pong’ frame.
• Frame ‘pong’ (‘PONG’). Idener 33. Frame ‘pong’ is a response
frame to a ‘ping’ frame. It conrms the existence of the remote in-
strument.
• Frame ‘write’ (‘WR’)
Example, write of the display value.
• Frame ‘write with acknowl-
edgment’ (‘WRA’)
• Frame ‘ok’ (‘OK’) ...
• ... or frame ‘error’ (‘ERR’)
Example, write of the display value with
request of conrmaon. Conrmaon is a
‘ok’ frame or a ‘error’ frame.
• Frame ‘read’ (‘RD’)
• Frame ‘answer’ (‘ANS’) ...
• ... or frame ‘error’ (‘ERR’)
Example, reading of the display value and
response from the remote instrument
with the value of the display register.
• Frame ‘ping’ (‘PING’)
• Frame ‘pong’ (‘PONG’)
Example, conrmaon that the remote in-
strument exists and is operave. Answer is
a ‘pong’ frame.
Units
Units
Units
Units

FEMA ELECTRÓNICA . Series K . K40-232
7
The protocol frames are structure with a header secon (‘Header’), a
data secon (‘Data’) and a end of frame secon (‘Trail’).
Secon ‘Header’
Contains the start of frame byte (‘STX’), the frame idener (‘ID’),
the sender (‘FROM’) and desnaon (‘TO’) addresses, the register
number (‘REG’) and the length (‘LONG’) of the ‘Data’ secon.
Secon ‘Data’
Contains the data of the register (‘REG’).
Header Data Trail
STX ID RSV FROM TO REG RSV LONG D0 D1 ... Dn CRC ETX
2x32 xxx32 n+1 [data] x3
01234 5 6 7 8 9 ... n+7 n+8 n+9
Field Descripon Size Posion Real value Frame value
STX Start of frame 1 byte 0 does not apply 2
ID Type of frame 1 byte 1 (see secon 1.13) real_value
RSV Reserved 1 byte 2032
FROM Sender address 1 byte 30 (‘Master’) / 1 a 31 (‘Slave’) 32 + real_value
TO Desnaon address 1 byte 4 0 (‘Master’) / 1 a 31 (‘Slave’)
128 (‘broadcast’)
32 + v
REG Register number 1 byte 5 see secons 1.16, 1.17 and 1.18 32 + real_value
RSV Reserved 1 byte 6 0 32
LONG Length of ‘Data’ secon 1 byte 7 n (between 0 and 32) 32 + real_value
D0 … Dn Data n bytes 8 a n+7 number 0 to 9
decimal point
sign (+/-)
ASCII code for number (48 to 57)
ASCII code for dot (46)
ASCII code for ‘+’ (43)
ASCII code for ‘-’ (45)
CRC CRC calculated value 1 byte n+8 does not apply (see secon 1.19)
ETX End of frame 1 byte n+9 does not apply 3
Table 2 - Descripon of the ASCII frame bytes
Secon ‘Trail’
Contains the ‘CRC’ code and the end of frame byte (‘ETX’).
‘Real value’ and ‘Frame value’
In order to use frame characters that are representable and easily
recognizable on screen, the protocol codies the values before intro-
ducing them into the frame. The following nomenclature is dened :
• ‘real value’ is the value of the eld without codicaon
• ‘frame value’ is the value codied
1.14 Frame structure

FEMA ELECTRÓNICA . Series K . K40-232
8
1.15 Frame examples
Header Trail
STX ID RSV FROM TO REG RSV LONG CRC ETX
2 32 32 32 54 32 32 32 52 3
Start Ping --- 0 22 0 --- 0 CRC Stop
Header Trail
STX ID RSV FROM TO REG RSV LONG CRC ETX
2 33 32 54 32 32 32 32 53 3
Start Pong --- 22 0 0 --- 0 CRC Stop
Example - The ‘Master’ (address ‘0’) requests conrmaon of ex-
istence to the ‘Slave’ at address ‘22’ (frame ‘PING’) and the ‘Slave’
answers to the ‘Master’ with a ‘PONG’ frame.
1.15.1 Frames ‘WRA’ (35) and ‘OK’ (39)
Example - The ‘Master’ (address ‘0’) sends a write frame, with re-
quest of acknowledgment, (frame ‘WRA’) with value ‘65.43’ to reg-
ister number ‘0’ (display value) to the ‘Slave’ with address ‘28’. The
Header Data Trail
STX ID RSV FROM TO REG RSV LONG D0 D1 D2 D3 D4 D5 CRC ETX
235 32 32 60 32 32 38 43 54 53 46 52 51 58 3
Start WRA --- 0 28 0 --- 6 +65.43 CRC Stop
1.15.2 Frame ‘ERR’ (38)
Header Trail
STX ID RSV FROM TO REG RSV LONG CRC ETX
2 38 32 60 32 33 32 32 57 3
Start ERR --- 28 0 1 --- 0 CRC Stop
Example - The ‘Slave’ with address ‘28’ answers to the ‘Master’ (ad-
dress ‘0’) with an error frame (frame ‘ERR’) indicang that the reg-
ister is unknown (‘UNKNOWN_REGISTER’, error code ‘1’). The error
1.15.3 Frames ‘PING’ (32) and ‘PONG’ (33)
‘Slave’ answers to the ‘Master’ with a ‘ok’ frame (‘OK’). In case of
error, it will answer with a ‘error’ frame (‘ERR’).
code is indicated in the ‘REG’ byte. For a list of error codes see secon
1.22.
Header Trail
STX ID RSV FROM TO REG RSV LONG CRC ETX
239 32 60 32 32 32 32 57 3
Start OK --- 28 0 0 --- 0 CRC Stop

FEMA ELECTRÓNICA . Series K . K40-232
9
1.15.4 Frames ‘RD’ (36) and ‘ANS’ (37)
1.15 Frame examples (cont.)
Example - The ‘Master’ (address ‘0’) requests the value of register
number ‘0’ (display value) to the ‘Slave’ with address ‘28’ (frame
‘RD’) and the ‘Slave’ answers to the ‘Master’ with a frame (‘ANS’)
that contains the value requested (65.43). For compability reasons,
de instrument will always answer with a 6 digit value, lling with le
zeros the addional posions.
Header Data Trail
STX ID RSV FROM TO REG RSV LONG D0 D1 D2 D3 D4 D5 D6 D7 CRC ETX
2 37 32 60 32 32 32 40 43 48 48 54 53 46 52 51 50 3
Start ANS --- 28 0 0 --- 8 +0065.43 CRC Stop
Header Trail
STX ID RSV FROM TO REG RSV LONG CRC ETX
236 32 32 60 32 32 32 58 3
Start RD --- 0 28 0 --- 0 CRC Stop

FEMA ELECTRÓNICA . Series K . K40-232
10
1.16 Registers in ‘Process slave’ mode
List of registers accessible (see Table 3) for an instrument congured
in ‘Process slave’ mode.
• register 0 contains the value to show on display. It is a numerical
value, with or without polarity at the rst character (‘+’ or ‘-’) and
with a single decimal point, or without decimal point.
Example 1 : send characters ‘+’ ‘7’ ‘4’ ‘.’ ‘6’ ‘1’ to read on dis-
play ‘74.61’
Example 2 : send characters ‘-’ ‘0’ ‘4’ ‘6’ to read on display
‘-46’
• registers 3, 4 and 5 contain the setpoint values for alarms 1, 2
and 3. By default, write access to these registers is disabled (set-
point value is modied through the front keypad). To enable read
Register
number
Name Type
(R=Read, W=Write)
Descripon
0Display R / W Register with the display value, including the decimal point and polarity.
1 Reserved --- ---
2Reserved --- ---
3Setpoint 1 R / W*
Value of the alarm setpoint. *Write to these registers is disabled by default
(see secon 1.20).
4 Setpoint 2 R / W*
5 Setpoint 3 R / W*
6Alarm status R Status of alarms 1, 2 and 3 (see secon 1.20).
Table 3 - Registers in ‘Process slave’ mode
and write access to these registers through the bus, see secon
1.28.9.
• write frames to the setpoint registers when they are dis-
abled will return error 8 ‘Read only register’.
• to save into the E2PROM the values wrien through the bus
into these registers, (values will be maintained incase of pow-
er loss) enable parameter ‘E2Pr’ (see secon 1.28.10).
• aer power loss, the instrument will start-up with all registers
inialized to a value of ‘0’ (see secon 1.8).
• the alarm status is accessible at register 6. The format of this
register is explained at secon 1.20.
1.17 Registers in ‘Full slave’ mode
Register
number
Name Type
(R=Read, W=Write)
Descripon
0Display R / W Register with the display value, including the decimal point and polarity.
1 Reserved --- ---
2Reserved --- ---
3Reserved --- ---
4 Reserved ---
5 Reserved ---
6Alarm status R / W Status of alarms 1, 2 and 3 (see secon 1.20).
Table 4 - Registers in ‘Full slave’ mode
List of registers accessible (see Table 4) for an instrument congured
in ‘Full slave’ mode.
• register 0 contains the value to show on display. It is a numerical
value, with or without polarity at the rst character (‘+’ or ‘-’) and
with a single decimal point, or without decimal point.
Example 1 : send characters ‘+’ ‘7’ ‘4’ ‘.’ ‘6’ ‘1’ to read on dis-
play ‘74.61’
Example 2 : send characters ‘-’ ‘0’ ‘4’ ‘6’ to read on display
‘-46’
• the alarm status is accessible at register 6. The format of this
register is explained at secon 1.20.
• aer power loss, the instrument will start-up with all registers
inialized to a value of ‘0’ (see secon 1.8).

FEMA ELECTRÓNICA . Series K . K40-232
11
1.18 Registers in ‘Text’ mode
Register
number
Name Type
(R=Read, W=Write)
Descripon
0Display R / W Register with the alphanumerical characters to represent on display. See
secon 1.21 for a list of representable characters.
1 Reserved --- ---
2Reserved --- ---
3Reserved --- ---
4 Reserved ---
5 Reserved ---
6Alarm status R / W Status of alarms 1, 2 and 3 (see secon 1.20).
Table 5 - Registers in ‘Text’ mode
• if the register contains more than 6 characters, the ‘scroll’
mode is acvated (see secon 1.28.3).
• the alarm status is accessible at register 6. The format of this
register is explained at secon 1.20.
• aer power loss, the instrument will start-up with all registers
inialized to a value of ‘0’ (see secon 1.8).
List of registers accessible (see Table 5) for an instrument congured
in ‘Text’ mode.
• register 0 contains the value to show on display. It is an alpha-
numerical value. The register can contain up to 71 characters.
• acceptable characters are indicated at Table 7.
• character ‘+’ is represented as an empty space.
• characters received not included in this table, are shown as
3 horizontal stripes on display ( ).
1.19 CRC calculaon
The frame_value for the CRC byte is calculated based on the frame_
values (see secon 1.14) of the bytes from the ‘Header’ and ‘Data’
secons. Calculaon consists on a ‘XOR’ funcon from byte ‘0’ (‘STX’)
to the last data byte (byte Dn).
• If the CRC calculated value is lower than ‘32’, it is normalized with
the funcon ‘complement to 1’.
CRC0=STX ^ ID ^ RSV ^ FROM ^ TO ^ REG ^ RSV ^ LONG ^ D0 ^...^ Dn
• Si (CRC0<32) -> CRC=!CRC0 (complement_to_1 funcon)
• Si (CRC0>31) -> CRC=CRC0
//example of CRC calculaon in C language
int8 Calculate_CRC(int8 CRC_Posion)
{
int8 i,CRC=0;
for(i=0;c<CRC_Posion;c++)
{
crc=crc ^ frame[i];
}
if(crc<32) CRC=~CRC;
return(CRC);
}

FEMA ELECTRÓNICA . Series K . K40-232
12
The ‘Alarm Status’ register (register 6) is available as a read_only reg-
ister for the ‘Process slave’ mode and as a read/write register for
the ‘Full slave’ and ‘Text’ modes. This register contains the status of
alarms 1, 2 and 3. Status is acve or inacve.
The ‘Alarm Status’ register is 1 character (1 byte) register, with pos-
sible values from ‘0’ to ‘7’. The alarm status for each value are indi-
cated at Table 6.
Note that the ‘Alarm Status’ register contains a value that is the ASCII
code of a number from ‘0’ to ‘7’. The reason is to maintain the pro-
tocol structure of transming ASCII protocols. Note that the value
represented by this character is the binary code represenng the sta-
tus of the alarms. for example, ASCII code 53 represents number ‘5’,
which in binary is ‘0101’, and corresponds with alarm status 3, 2 and
1 in ‘on’, ‘o’ and ‘on’.
1.20 The ‘Alarm status’ register
Register
value
ASCII
character
Alarm 3
status
Alarm 2
status
Alarm 1
status
‘0’ 48 o o o
‘1’ 49 o o on
‘2’ 50 o on o
‘3’ 51 o on on
‘4’ 52 on o o
‘5’ 53 on o on
‘6’ 54 on on o
‘7’ 55 on on on
Table 6 - Register ‘Alarm Status’.
1.21 Representable characters
Representable characters are indicated in the following table.
• In numerical modes (‘Full slave’ and ‘Process slave’ modes) only
numbers from ‘0’ to ‘9’, decimal point (‘.’ or ‘,’) and polarity (‘+’ or
‘-’) are representable. Missing polarity is assimilated to posive
polarity. Character ‘+’ is not represented on display.
• In ‘Text’ mode all characters in the table are representable.
Representable characters
Character Display
Cod. ASCII Character Display Cod. ASCII Character Display Cod. ASCII Character Display Cod. ASCII
0 48 A a 65 / 97 K k 75 / 107 T t 84 / 116
149 B b 66 / 98 L l 76 / 108 U u 85 / 117
250 C c 67 / 99 M m 77 / 109 V v 86 / 118
351 D d 68 / 100 N n 78 / 110 W w 87 / 119
452 E e 69 / 101 Ñ ñ 165 / 164 X x 88 / 120
553 F f 70 / 102 O o 79 / 111 Y y 89 / 121
654 G g 71 / 103 P p 80 / 112 Z z 90 / 122
755 H h 72 / 104 Q q 81 / 113 ‘.’ ‘,’ 44 / 46
856 I i 73 / 105 R r 82 / 114 - 45
957 J j 74 / 106 S s 83 / 115 +
*(not representable)
43
Table 7 - Representable characters. *Character ‘+’ is accepted as polarity but has no representaon on display..
Character ‘+’ is represented as a blank space. Characters not in-
cluded in this table are represented with 3 horizontal stripes( ).
• Character ‘.’ and character ‘,’ represent both the decimal point.

FEMA ELECTRÓNICA . Series K . K40-232
13
Messages and errors shown on display
‘Err.1’ incorrect password.
‘Err.2’ at ‘oPt.X’ menu entry. Installed module is not recognized.
‘Err.W’ ‘Watchdog’ error
‘9999’ + ashing mode. Reading is in overrange.
‘-1999’ + ashing mode. Reading is in underrange.
Table 8 - Messages and error codes related to the instrument
Error messages are grouped into those related to the instrument,
and those related to the frames
• errors related to the instrument are shown on display (see Table
8).
1.22 Messages and errors
Messages and errors related to the ASCII protocol frames
1‘Unknown register’ The requested register does not exist.
4‘CRC error’ The received frame has a CRC error.
6‘Empty Data’ A ‘WRA’ frame has been received without ‘DATA’ secon. Error is not sent in case of frames ‘WR’
7‘Reserved register’ Requested acon is directed to a reserved register. Acon is ignored.
8‘Read only register’ A write acon is directed to a read-only register.
9‘Frame error’ The frame ID is not known.
10 ‘First char error’ When wring on numerical registers, rst character must be a number or polarity (‘+’ or ‘-‘). In case
of other characters, this error is generated.
11 ‘Format error’ When wring on numerical registers, the value contains characters not representable, which pre-
vents conversion to a number. Representable characters are numbers from 0 to 9, polarity (‘+’ and
‘-’) at the beginning of the register, and one decimal point.
12‘Out of range’ When wring on numerical registers, the number is out of the representable range of numbers ac-
cepted by the instrument. For example, 6 digits are being received and ths instrument allows for a
maximum of 4.
13 ‘String error’ When wring on text registers, the ‘DATA’ eld is too long (75 bytes, 75 bytes characters)
Table 9 - Messages and error codes related to the ASCII protocol frames
• error messages related to the communicaons protocol are
informed into the response frame (see Table 9). Error messages
are generated only as answers to frames ‘WRA’ or ‘RD’. No anser
frames with error informaons will be generated for ‘WR’ frames.

FEMA ELECTRÓNICA . Series K . K40-232
14
The ‘watchdog’ funcon acvates an error state in case of loss of
communicaon with the ‘master’. To congure the ‘watchdog’ indi-
cate the maximum me accepted to wait between two frames re-
ceived. If this me exceeds, the ‘watchdog error’ acvates. Receiving
a correct frame resets the ‘watchdog’ mer.
Frames that can reset the ‘watchdog’ mer are those addressed to
the ‘slave’ instrument. These frames must conform to the indicated
ASCII protocol and have a correct CRC.
If the funcon or register or coil indicated in the frame is not correct,
the ‘slave’ instrument will sll reset the ‘watchdog’ mer. It will also
reply with the corresponding error message.
The internal alarms of the instrument can be associated to the
‘watchdog’. In case of ‘watchdog’ acvaon, the associated alarm
will also acvate.
Display can also be congured to show an error message in case of
‘watchdog’ error. It can be congured for ashing, dash (‘------’) or to
show message ‘Err.W’.
See secons 1.28.4 and 1.28.5 for informaon on alarm congura-
on and secon 1.28.3 for informaon on ‘watchdog’ conguraon.
‘Bus acvity’ funcon is a detector of electrical acvity on the bus.
The funcon is to help when connecng the instrument to the bus
for the rst me. It provides informaon on wether there is electrical
acvity on the bus or not.
The ‘Bus acvity’ funcon is visible in the form of a counter increas-
ing its value on the display. It indicates that the UART is detecng
informaon bytes on the bus. This detecon means that there are
data on the bus, and that it conforms to the congured speed and
data format.
‘Bus acvity’ funcon is accessible at key UP (5), when enabled as
indicated in secon 1.28.6.
1.23 Numerical registers : restricons
Registers which must contain a numerical value, are controlled to as-
sure that the value received from the frame is a true numerical value.
If controls are successful, the value is saved into the register. Other-
wise, an error is generated. Registers which must contain numerical
values are the following :
• ‘Display’ register
• ‘Setpoint 1’, ‘Setpoint 2’ and ‘Setpoint 3’ registers
When wring data into these registers, the instrument converts the
ASCII characters received on the ‘DATA’ secon of the frame, to a
numerical value. The following controls are applied, in the order in-
dicated below :
• Secon ‘DATA’ can not be empty of characters. It generates an
error 6 ‘Empty Data’.
• First character must be ‘+’, ‘-’, ‘.’, ‘,’ or a number from ‘0’ to ‘9’. It
generates error 10 ‘First char error’.
• Secon ‘DATA’ must contain maximum one decimal point. It
generates error 11 ‘Format error’.
• Secon ‘DATA’ can contain only characters from ‘0’ to ‘9’ or dec-
imal point (‘,’ o ‘.’). First character has already been controled and
is not controlled again. If other character is found, it generates
error 11 ‘Format error’.
• If secon ‘DATA’ does not contain decimal point, its maximum
length is 7 characters. If secon ‘DATA’ contains decimal point, its
maximum length is 8 characters. Larger data generates error 12
‘Out of range’.
• Conversion from ASCII characters to a number. Decimal point is
separated from the number, which is treated as an integer.
Examples : possible conversions are as follows:
‘1234’ is read on display as 1234
‘-1234’ is read on display as -1234
‘-12.34’ is read on display as -12.34
‘+.995’ is read on display as 0.995
‘+0.995’ is read on display as 0.995
‘0.995’ is read on display as 0.995
‘.995’ is read on display as 0.995
‘+0027’ is read on display as 27
‘+27’ is read on display as 27
‘27’ is read on display as 27
• The numerical integer is sent to display. If the number is higher
than the maximum number that can be represented by the dis-
play, it generates an error 12 ‘Out of range’.
Example : ‘-67.89’ is not representable on display, because
minimum display is -1999. Instrument will generate an
‘Out of range’ error. ‘Display’ register is not updated. It
generates an answer frame 12 ‘Out of range’ if the wring
was requested with a ‘WRA’ frame.
Note : character ‘.’ and ‘,’ are equivalent and both are associated
to the decimal point.
1.24 Addresses and ‘broadcast’
Addresses available to assign to the intruments are from 1 to 31. Ad-
dress 128 is a ‘broadcast’ address.
Instruments will accept and process frames when desnaon ad-
dress of the frame matches its own address.
All frames addressed to desnaon address 128 will be accepted by
all instruments, independent of its own address. Instruments will not
generate answer frames when desnaon address is 128.
• a ‘ping’ (‘PING’) frame to desnaon address 128 will not gen-
erate answer
• a ‘write with aknowldgement’ (‘WRA’) frame to desnaon ad-
dress 128 will not generate answer
• a ‘read’ (‘READ’) frame to desnaon address 128 will not gen-
erate answer
• a frame to desnaon address 128 which contains an error (a
CRC error for example) will not generate answer
1.25 ‘Watchdog’ funcon
1.26 ‘Bus acvity’ funcon

FEMA ELECTRÓNICA . Series K . K40-232
15
The instrument has two menus accessible to the user :
‘Conguraon menu’ (key SQ) (<)
‘Fast access’ menu (key UP) (5)
Conguraon menu
The ‘conguraon menu’ modies the conguraon parameters to
adapt the instrument to the applicaon needs. To access the ‘con-
guraon menu’ press for 1 second the SQ (<) key. This access can
be blocked by acvang the ‘Password’ (‘PASS’) funcon. While
operang the ‘conguraon menu’, the alarm status is ‘hold’ to the
status they had before accessing the menu, and the output and con-
trol modules remain in ‘error’ state. When leaving the ‘conguraon
menu’, the instrument applies a system reset, followed by a brief
disconnecon of the alarms and the output and control modules.
Funconality is then recovered.
For a detailed explanaon on the ‘conguraon menu’ see secon
1.28, and for a full view of the ‘conguraon menu’ structure see
secon 1.30.
‘Fast access’ menu
The ‘fast access’ menu is an operator congurable menu, providing
fast and direct access to the most usual funcons of the instrument
with a single key pad stroke. Press key UP (5) to access this menu.
See secon 1.28.6 for a list of funcons eligible for ‘fast access’ in
this instrument. The ‘Password’ (‘PASS’) funcon does not block ac-
cess to this menu. Accessing and modifying parameters in the ‘fast
access’ menu does not interfere with the normal funconality of the
instrument, and it does not generate any system reset when validat-
ing the changes.
Front key pad descripon
Key SQ (<) - press the SQ (<) key for 1 second to access the ‘con-
guraon menu’. Inside the menu, the SQ (<) key funcons as a
‘ENTER’ key. It selects and accesses the menu opon currently dis-
played. At menus with numerical value entries, it validates the num-
ber displayed.
Key UP (5) - the UP (5) key gives access to the ‘fast access’ menu.
Inside the menus, it moves vercally through the dierent menu op-
ons. At menus with numerical value entries, it modies the digit
selected by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
Key LE (3) - inside the menus, the LE (3) key funcons as the ‘ES-
CAPE’ key. It leaves the selected menu, and eventually, will leave the
whole menu. When leaving the ‘conguraon menu’ with the LE (3)
key, the changed parameters are acvated. At menus with numeri-
cal value entries, the LE (3) key allows to select the acve digit. To
modify the value of the selected digit use the UP (5) key.
Menu ‘rollback’
Aer 30 seconds without interacon from the operator, the instru-
ment will rollback and leave the ‘conguraon menu’ or the ‘fast ac-
cess’ menu. All changes will be discarded.
1.27 How to operate the menus
Example of operaon inside the
‘conguraon menu’.
1. The SQ (<) key enters into the
‘working mode’.
2. The SQ (<) key enters into the
‘Proc’ opon menu.
3. The UP (5) key moves through
the menu opons.
4. The SQ (<) key selects the
desired range and returns to the
‘ModE’ menu.
5. The LE (3) key leaves the ac-
tual menu level and moves to the
previous menu level.
6. The LE (3) key leaves the ‘con-
guraon menu’. Changes are ap-
plied and saved at this moment.
Working mode
(2)
(3)
(3)
(5)
(5)
(3)
(3)
(6)
(6)
(1)

FEMA ELECTRÓNICA . Series K . K40-232
16
Press ‘SQ’ (<) for 1 second to access the ‘conguraon menu’.
For a descripon on how to operate inside the menus see secon
1.27. For a full vision of the ‘conguraon menu’ structure see
secon 1.30.
1.28 Conguraon menu
1.28.1 Inial set-up
Working mode
Speed
(en kbps)
from 38.4 Kbps
...
...
to 600 bps
Bus
conguraon
8 bits, no parity, 1 stop
Format
8 bits, even parity, 1 stop
8 bits, odd parity, 1 stop
8 bits, no parity, 2 stop
The instrument can work in two dierent modes called ‘Process
Slave’, ‘Full slave’ and ‘Text’. In all three modes, informaon on dis-
play is received through the communicaons bus. The modes dier
in how informaon received is interpreted and how alarms are man-
aged.
• ‘‘Process slave’ mode’ (‘Proc’) - instrument receives a numeri-
cal value through the communicaons bus, to represent on display.
Alarms, analog outputs and other control modules are controlled
based on local conguraon and actual display value. Alarm ac-
vaon or deacvaon depends on the display value and the local
alarm conguraon.
• ‘‘Full slave’ mode’ (‘F.SLV’) - instrument receives a numerical
value through the communicaons bus, to represent on display.
Alarms are also controlled by acvaon and deacvaon orders
received from the communicaons bus. Analog outputs and other
control modules are controlled based on local conguraon and ac-
tual display value.
• ‘‘Text’ mode’ (‘tEXt’) - instrument receives ASCII characters
through the communicaons bus, to represent on display. Alarms
are also controlled by acvaon and deacvaon orders received
from the communicaons bus. Analog outputs and other control
modules are controlled based on local conguraon and actual dis-
play value.
Conguraon menus for each modes are slightly dierent. Following
is a descripon of the full conguraon menu, with a note when the
menu entry applies only to one of the modes.
Assigns bus speed and data format inside the ‘Bus conguraon’
(‘buS’) menu.
• en ‘Speed’ (‘bAud’) select the bus speed (in Kbps).
• en ‘Format’ (‘bitS’) select the data format between ‘8n1’, ‘8e1’,
8o1’ and ‘8n2’.
1.28.2 Bus conguraon
‘Full Slave’ mode
‘Text’ mode
‘Process slave’ mode

FEMA ELECTRÓNICA . Series K . K40-232
17
1.28 Conguraon menu (cont.)
1.28.3 Conguraon
Conguraon
1 to 31
Local address
Watchdog
Watchdog waing
me
On error
Flash
Dashes (----)
do nothing
Watchdog error
Alarms in
‘full slave’ mode
In conguraon menu assign the instrument address, the ‘watchdog’
me, dene the behavior in case of error, and congure the scroll
funcon for ‘Text’ mode.
• at ‘Local address’ (‘Addr’) assign the address of the instrument in
the bus. Values from 1 to 31.
• at ‘Watchdog’ (‘W.doG’) dene the maximum waing me be-
tween frames, in seconds. If me between received frames exceeds
the dened value, an error state will be generated and the funcon
‘watchdog’ will acvate (see secon 1.25). Select ‘0’ to disable the
‘watchdog’. Maximum value 120 seconds.
• at ‘On error’ (‘on.Er’) congure the acon in case of watchdog er-
ror.
- select ‘Flash’ (‘FLSh’) to acvate the display ash.
- select ‘Dashes’ (‘dASh’) to acvate dashes (‘----’) on display.
- select ‘Watchdog error’ (‘Err.W’) to acvate message ‘Err.W’ on
display.
- select ‘do nothing’ (‘nonE’) to perform no acon.
• the ‘Scroll’ (‘ScrL’) entry applies only to ‘Text’ mode, select ‘on’ to
acvate the scroll to represent messages with a number of charac-
ters higher than the number of display digits. For example, a mes-
sage with characters ‘Abcd1234’ will be represented as :
Text scroll
Scroll funcon in
‘Text’ mode
1.28.4 Alarms in ‘Full slave’ and ‘Text’ mode
Menu available only in ‘Full slave’ and ‘Text’ modes. Alarms are re-
motely controlled from the communicaons bus. Each alarm can be
also congured to acvate when ‘watchdog’ error acvates (see sec-
on 1.25). This alarm can then control a signal showing that commu-
nicaon is lost to the operator.
For alarm conguraon in ‘Process slave’ mode see secon (see sec-
on 1.28.5).
Alarm 1 Remote
Watchdog
Alarm 2
Alarm 3
Remote
Watchdog
Remote
Watchdog

FEMA ELECTRÓNICA . Series K . K40-232
18
1.28.5 Alarms in ‘Process slave’ mode
1.28 Conguraon menu (cont.)
Alarm 1
Setpoint
Hysteresis
Setpoint 2
Acve
Alarm type
Alarms in ‘pro-
cess slave’ mode
Acvaon delay
Decvaon delay
Inverted relay
Locked alarm
Reading
Time
setpoint
hysteresis
Alarm as maximum,
no hysteresis, no delays
on
o Time
acvaon
delay
on
o
deacvaon
delay
Time
Alarm as maximum,
with hysteresis and delays
on
o Time
Alarm as minimum,
no hysteresis, no delays
Reading
Time
Setpoint 2
Setpoint 1
Alarm as minimum,
with double setpoint,
no hysteresis, no delays
on
o Time
Menu available only in ‘Process slave’ mode. Alarms are locally con-
trolled from the instrument. Operator must manually congure the
alarm parameters for each alarm.
To congure an alarm, enter into the alarm menu (‘ALr1’, ‘ALr2’ or
‘ALr3’) and congure the following parameters :
• select ‘Acve’ (‘Act’) to ‘on’
• at ‘Alarm type’ (‘TypE’) select the alarm to act as a maximum type
alarm (‘MAX’) or a minimum type alarm (‘MIn’). The maximum type
alarm (or minimum type alarm) acvates when the display value is
higher (or lower) than the setpoint value. Select ‘watchdog’ (‘W.
doG’) alarm to acvate the alarm when the ‘watchdog’ error ac-
vates (see secon 1.25).
• at ‘Setpoint’ (‘SEt’) enter the value for the alarm acvaon point.
This parameter is eligible for conguraon through the ‘Fast access’
menu (see secon 1.28.6).
• congure the hysteresis value at ‘Hysteresis’ (‘hySt’). The hyster-
esis applies to the deacvaon process of the alarm. The alarm de-
acvates when the reading has passed the setpoint value plus the
hysteresis value. Hysteresis helps to avoid repeve switching of the
alarm relays, due to uctuang input signals around the setpoint.
• at ‘Acvaon delay’ (‘dEL.0’) congure the delay to apply before
alarm acvaon. The acvaon delay starts counng when the set-
point value is passed. Value from 0.0 to 99.9 seconds.
• at ‘Deacvaon delay’ (‘dEL.1’) congure the delay to apply
before alarm deacvaon. The deacvaon delay starts counng
when the setpoint value plus the hysteresis value, is passed. Value
from 0.0 to 99.9 seconds.
• to work with ‘windowed alarms’ (see graphical example below)
acvate ‘Setpoint 2’ (‘SEt2’) to ‘on’ and then congure the desired
second setpoint value. Second setpoint must always be higher in
value than the rst setpoint.
• the ‘Relay inverted’ (‘r.Inv’) parameter inverts the normal relay
connecons. When set to ‘on’ the relay will be acve when alarm is
inacve. For security applicaons where an inacve relay controls
the shutdown of the system.
• the ‘Locked alarm’ (‘A.Lck’) parameter disables the automac
deacvaon of the alarm. Alarm deacvaon must be performed
manually, by pressing the ‘LE’ front buon (see secon 1.28.11)

FEMA ELECTRÓNICA . Series K . K40-232
19
1.28 Conguraon menu (cont.)
Tools
On power-up Delay Seconds
Alarm 1
Alarm 2
Alarm 3
Key UP
(‘fast access’)
Memory of
maximum
Memory of
minimum
Setpoint 1
Setpoint 2
Setpoint 3
Bus acvity
Setpoint on bus
Address
The ‘UP’ (5) key at the front of the instrument gives access to a list
of funcons congurable by the operator. See secon 1.27 for an ex-
planaon on how to operate the ‘fast access’ menu.
The ‘Key UP (Fast access)’ (‘K.uP’) menu allows to select which func-
ons will be accessible through the ‘fast access’ menu. Select ‘on’ to
acvate each funcon.
• the ‘Bus acvity’ (‘buS.A’) helps to visualize acvity in the commu-
nicaons bus (see secon 1.26).
• the ‘Memory of maximum’ (‘MAX’) or ‘Memory of minimum’
(‘MIn’) funcons allow to visualize the maximum or minimum read-
ing value stored in memory. To reset this value, visualize the memory
value at the ‘fast access’ menu with key UP (5) and when message
‘rSt’ is displayed, press (<) to reset.
• the ‘Setpoint 1’ (‘ALr1’) funcon allows to visualize and modify the
alarm 1 setpoint through the ‘fast access’ menu. Available only in
‘Process slave’ mode.
• the ‘Setpoint 2’ (‘ALr2’) funcon allows to visualize and modify the
alarm 2 setpoint through the ‘fast access’ menu. Available only in
‘Process slave’ mode.
• the ‘Setpoint 3’ (‘ALr3’) funcon allows to visualize and modify the
alarm 3 setpoint through the ‘fast access’ menu. Available only in
‘Process slave’ mode.
• the ‘Address’ (‘Addr’) funcon allows to visualize the address of
the instrument.
1.28.6 Fast access
The ‘On Power Up’ (‘on.Pu’) menu congures funcons to apply at
start-up. It applies only to instrument restart aer power loss. It does
not apply to instrument restart due to change in conguraon (see
secon 1.8).
• parameter ‘Delay’ (‘dLAy’) assigns a waing me in seconds to be
applied at start-up. During this waing me, the display shows all
decimal points ashing (see secon 1.8) and no acon is performed.
Delay value between 0 and 200 seconds.
• parameters ‘Alarm 1’ (‘ALr1’), ‘Alarm 2’ (‘ALr2’) and ‘Alarm 3’ (‘ALr3’)
dene the alarm status at instrument start-up (see secon 1.8).
1.28.7 Super fast access
If only a single funcon is selected for the ‘fast access’ menu, press-
ing the the ‘UP’ (5) key will shortly display the funcon name and
then automacally jump to the funcon value.
1.28.8 Menu ‘On Power Up’
Available only in ‘Process slave’ mode. Alarm conguraon in ‘Pro-
cess slave’ mode is done through the front keypad. Enable the
‘Setpoint on bus’ (‘StP.b’) funcon to ‘on’ to enable alarm setpoint
registers accessible from the communicaons bus. By default this
funcon is ‘oFF’.
Nota : value wrien in the ‘alarm’ register updates the alarm set-
point. But manual modicaon of alarm setpoint does not update
the ‘alarm’ register.
1.28.9 Menu ‘Setpoint on bus’

FEMA ELECTRÓNICA . Series K . K40-232
20
1.28 Conguraon menu (cont.)
At the ‘Password’ (‘PASS’) menu select a 6 digit code to block access
to the ‘conguraon menu’. Instrument conguraon will not be ac-
cessible to non authorized personnel. To acvate the ‘Password’ se-
lect ‘on’ and introduce the code.
The code will be requested when trying to access the ‘conguraon
menu’ (key ‘SQ’ (<)). The ‘fast access’ menu is not password pro-
tected.
The ‘Version’ (‘VEr’) menu informs of the current rmware version
installed in the module.
At the ‘Brightness’ (‘LIGh’) menu select the light intensity for the
front leds. With this funcon it is possible to adapt the instrument to
the environment light intensity.
1.28.11 Menu ‘Key LE’
Menus ‘OPt.1’, ‘OPt.2’ and ‘OPt.3’ give access to the ‘conguraon
menus’ of the output and control modules installed at slots Opt.1,
Opt.2 and Opt.3.
See secon 2 for a list of output and control modules available for
each slot. The ‘conguraon menu’ of each module is described at
the User’s Manual of each module.
1.28.12 Funcon ‘Password’
At the ‘Factory reset’ (‘FAct’) menu, select ‘yes’ to load the default
factory conguraon for the instrument (see secon 1.29).
1.28.13 Factory reset
1.28.14 Firmware version
1.28.15 Brightness
The ‘LE’ (3) key at the front of the instrument can be congured to
acvate several funcons. Only one funcon can be assigned to the
‘LE’ (3) key
• the ‘No funcon’ (‘nonE’) value assigns no funcon.
• the ‘Alarm unlock’ (‘A.Lck’) value assigns the manual unlock of the
alarms funcon, for instruments with the ‘Locked alarms’ (‘A.Lck’)
funcon acvated (see secon 1.28.5)
1.28.10 Menu ‘Save to E2PROM’
Key ‘LE’
Alarm unlock
no funcon
Opon 1
Conguraon menu for the module installed at Opt.1
Opon 2
Conguraon menu for the module installed at Opt.2
Opon 3
Conguraon menu for the module installed at Opt.3
Password
Version
Factory reset
Minimum
Brightness
Maximum
Standard
By default, saving values to the E2PROM from the communciaons
bus, is disabled. Select ‘on’ to save updates on the setpoint values
also to the E2PROM (see secon 1.28.9).
This parameter is set to ‘oFF’ by default because E2PROM memo-
ries have a typical live of 100.000 saving cycles. This value is clearly
enough for manual changes on the setpoint, but from a communica-
ons bus, this value can be achieved very fast if the sender is not
accurate enough in controlling the send frames.
1.28.16 Access to oponal modules
Remote
SAve to E2PROM