Lumel SM4 User manual

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MODULE OF LOGIC OUTPUTS
SM4
USER’S MANUAL

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1. APPLICATION................................................................................ 5
2. MODULE SET ................................................................................ 6
3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY............ 6
4. INSTALLATION ............................................................................. 8
4.1. Module fitting .......................................................................... 8
4.2. Terminal description................................................................ 9
5. SERVICE ...................................................................................... 12
5.1. Description of the MODBUS protocol implementation ......... 13
5.2. Description of the MODBUS protocol functions ................... 14
5.3. Map of module registers....................................................... 17
5.4. Set of module registers ........................................................ 18
6. TECHNICAL DATA....................................................................... 23
7. BEFORE A DAMAGE WILL BE DECLARED.............................. 25
8. ORDERING CODES..................................................................... 26
9. MAINTENANCE AND GUARANTEE........................................... 27
Contents

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Fig.1. View of SM4 module
1. APPLICATION
The SM4 module of logic outputs is destined to control simple actuators through
assignment of logic states received from the master device through the RS-485
interface.
The module can have 8 logic outputs or 4 relay outputs (depending on the execution)
and RS-485 and RS-232 interfaces with MODBUS RTU and ASCII transmission
protocols.
RS-232 and RS-485 ports are galvanically isolated from output signals and the
supply.
The module programming is possible by means of the RS-485 or RS-232 port.
A connecting wire to connect with the PC computer (RS-232) is included to the
SM4 module set.
Module parameters:
8 outputs of OC type or 4 relay outputs,
RS-485 communication interface with
MODBUS RTU and ASCII transmission
protocols to work in industrial systems with
an optical transmission signalling on LED
diodes,
Configurable baud rate: 2400....115200 bit/s

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2. MODULE SET
The module set includes:
SM4 module ...................................................................................1 pc,
User’s manual ...............................................................................1 pc,
BU1005 plug with screw terminals .................................................2 pcs,
BU0204 plug with screw terminals .................................................2 pcs,
Hole plug of the RS-232 socket......................................................1 pc,
3. BASIC REQUIREMENTS AND OPERATIONAL SERVICE
Symbols located in this service manual mean:
WARNING!
Warning of potential, hazardous situations.
Especially important. One must acquaint with
this before connecting the module.
The non-observance of notices marked by these symbols can
occasion severe injuries of the personnel and the damage of
the instrument.
CAUTION!
Designates a general useful note. If you observe it, handling
of the module is made easier.
One must take note of this, when the instrument
is working inconsistently to the expectations.
Possible consequences if disregarded !
In the security scope the module meets the requirements of the EN 61010
-standard.
Remarks concerning the operator safety:
1. General
- The SM4 module is destined to be mounted on a 35 mm mounting rail.
- Non-authorized removal of the required housing, inappropriate use, incorrect instal-
lation or operation creates the risk of injury to personnel or damage to equipment.
For more detailed information please study the user’s manual.
- All operations concerning transport, installation, and commissioning as well as
maintenance must be carried out by qualified, skilled personnel and national
regulations for the prevention of accidents must be observed.
- According to this basic safety information, qualified, skilled personnel are persons
who are familiar with the installation, assembly, commissioning, and operation of

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the product and who have qualifications necessary for their occupation.
2. Transport, storage
Please observe the notes on transport, storage and appropriate handling.
Observe the climatic conditions given in Technical Data.
3. Installation
- The meter must be installed according to the regulation and instructions given
in this user’s manual.
- Ensure proper handling and avoid mechanical stress.
- Do not bend any components and do not change any insulation distances.
- Do not touch any electronic components and contacts.
- Instruments may contain electrostatically sensitive components, which can easily
be damaged by inappropriate handling.
- Do not damage or destroy any electrical components since this might endanger
your health!
4. Electrical connection
- Before switching the instrument on, one must check the correctness of connection
to the network.
- In case of the protection terminal connection with a separate lead one must remem-
ber to connect it before the connection of the instrument to the mains.
- When working on live instruments, the applicable national regulations for the
prevention of accidents must be observed.
- The electrical installation must be carried out according to the appropriate regu-
lations (cable cross-sections, fuses, PE connection).
Additional information can be obtained from the user’s guide.
- The documentation contains information about installation in compliance withEMC
(shielding, grounding, filters and cables). These notes must be observed for all
CE-marked products.
- The manufacturer of the measuring system or installed devices is responsible for
the compliance with the required limit values demanded by the EMC legislation.
5. Operation
- Measuring systems including SM4 modules, must be equipped with protection
devices according to the corresponding standard and regulations for prevention
of accidents.
- After the instrument has been disconnected from the supply voltage, live compo-
nents and power connections must not be touched immediately because capacitors
can be charged.
- The housing must be closed during operation.
- The RS-232 socket serves only to connect the device (Fig. 5) working with the
MODBUS protocol.
When the module socket is not used place the hole plug.
6. Maintenance and servicing.
- Please observe the manufacturer’s documentation.

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Fig.2. Overall and assembly dimensions
- Read all product-specific safety and application notes in this user’s manual.
Before taking the meter housing out, one must turn the supply off.
The removal of the instrument housing during the warranty contract period may
cause its cancellation.
4. INSTALLATION
4.1. Module fitting
The module is foreseen to be fixed on a 35 mm mounting rail (EN 60715)
The module housing is made of a non-flammable plastics.
Housing dimensions: 45 x 120 x 98 mm.
Connect external wires up to 2.5 mm2cross-section (from supply and interface side)
and up to 1.5 mm2(from output signals side).

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Three diodes are located on the frontal
plate:
green - signals the supply
connection
green (RxD) - signals the data
reception by the
module
yellow (TxD) - signals the data
transmission by the
module
An example of logic output connection
of OC type is presented below
Fig.3. Electrical connections
of the SM4 binary output
module.
Fig. 4. Example of logic output
connection of OC type.
4.2. Terminal description
The supply and external signals must be connected in accordance with the description
from the fig. 3 and tables 1 and 2.
Notice:
One must pay particular attention to the correct connection of
external signals (see tables 1 and 2).

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Description of SM4 logic output module
- Version with 8 outputs of OC type.
Terminal Terminal description
1 GND line of logic outputs
2 OUT1 line - output No 1
3 OUT2 line - output No 2
4 OUT3 line - output No 3
5 OUT4 line - output No 4
6 OUT5 line - output No 5
7 OUT6 line - output No 6
8 OUT7 line - output No 7
9 OUT8 line - output No 8
10 + line - output supply voltage
11, 12 Module supply lines
13...15 Not used
16 RS-485 interface mass with opto-isolation
17 Line Aof RS-485 interface with opto-isolation
18 Line Bof RS-485 interface with opto-isolation
Description of SM4 logic output module
- Version with 4 relay outputs.
Terminal Terminal description
1 GND line
2, 3 Output relay No 1
4, 5 Output relay No 2
6, 7 Output relay No 3
8, 9 Output relay No 4
10 5 V d.c. line
11, 12 Module supply lines
13...15 Not used
16 GND line of RS-485 interface with opto-isolation
17 Line Aof RS-485 interface with opto-isolation
18 Line Bof RS-485 interface with opto-isolation
Table 1
Table 2

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Fig. 5. Connection way of RS-485 and RS-232 interfaces
NOTICE:
Taking in consideration electromagnetic interference one must use screened
wires to connect binary outputs signals and RS-485 interface signals. One
must connect the screen to the protective terminal in a single point. The supply
must be connected by a two-wire cable with an appropriate cross-section and
protected by a cut-out.
The remove of the module housing during the guarantee period causes its
cancellation.
5. SERVICE
After connecting external signals and switching the supply on, the SM4 module is
ready to work.
The lighted green diode signals the module work. The green diode (RxD) signals
the module polling, however the yellow diode (TxD) signals the module response.
Diodes should ignite in cycles during the data transmission, both through the
RS-232 and the RS-485 interface.
The signal „+” (terminal 10), depending on the version, represents:
- for SM4 with 8 outputs of OC type - The terminal to which one must apply
the supply voltage for OC output circuits, the level of possible voltage:
5... 50 V d.c.
- For SM4 with 4 relay outputs - the output 5 V with admissible load capacity
50 mA, one can use it to supply external circuits.

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One can program all module parameters by means of RS-232 or RS-485.
The RS-232 port has constant transmission parameters in accordance with tech-
nical data, what enables the connection with the module, even when programmed
parameters of the RS-485 digital output are unknown (address, mode, rate).
The RS-485 standard allows to the direct connection to 32 devices on a single serial
link up to 1200 m. To connect a greater number of devices it is necessary to use
additional intermediate-separating system e.g. converter/repeater of PD51 type)..
The way of the interface connection in given in the user’s manual (fig.5 ).
To obtain the correct transmission, it is necessary to connect Aand Blines in parallel
with their counterparts in other devices.
The connection must be carried out with a shielded wire.
The shield must be conneted to the protective terminal in a single point.
The GND line serves to the additional protection of the interface line at long con-
nections. One must connect it to the protective terminal (that is not necessary for
the correct interface work). To obtain the connection with the PC computer through
the RS-485 port, an RS-232/RS-485 converter (PD51) or an RS-485 interface card
is indispensable.
The marking of transmission lines for the card in the PC computer depends on
the card manufacturer.To obtain the connection through the RS-232 port, the wire
added to the module is sufficient.
The connection way of both ports (RS-232 and RS-485) is shown on the fig. 5.
The module can be connected to the device of master type only through one inter-
face port. In case of a simultaneous connection of both ports, the module will work
through the RS-232 interface.
5.1. Description of MODBUS protocol implementation
The transmission protocol describes ways of the information exchange between
devices through serial links.
The MODBUS protocol has been implemented in the module in accordance with
the PI-MBUS-300 Rev G specification of the Modicon company.
Transducer address 1... 247
Baud rate 2400, 4800, 9600, 19200, 38400, 57600,
115200 bit/s
Working modes ASCII, RTU
Information unit ASCII: 8N1, 7E1, 7O1
RTU: 8N2, 8E1, 8O1, 8N1
Maximal response time 300 ms.
The parameter configuration of the serial link is described in the further part of the
User’s Manual. It consists on establishing the baud rate (baud parameter), device
address (Adr parameter) and the information unit type (Mode parameter).

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Readout of n-registers (code 01h)
Function inaccessible in data transmission mode.
Example: Readout of 10 registers beginning from the register with the 0898h
(2200) address:
Request:
In case of the module connection with the computer through the RS-232 wire, the
module set automatically following transmission parameters:
Baud rate: 9600 bps
Working mode: RTU 8N1
Address: 1
Notice: Each module connected to the communication network must:
have a unique address, different from addresses of other devices connected
to the network,
identical baud rate and information unit type,
the message sent with the address „0” is identified as the data transmission
mode (transmission to many devices)
5.2. Description of the MODBUS protocol functions
Following functions of the MODBUS protocol has been implemented in the SM4
module series.
Code Meaning
01 (01h) Readout of n-bit registers
03 (03h) Readout of n-registers
04 (04 h) Readout of n-input registers
06 (06 h) Write of a single register
15 (0Fh) Write of n-bit registers
16 (10h) Write of n-registers
17 (11h) Identification of slave device
Description of the MODBUS protocol functions Table 3
Answer:
096C
Device
addres
Checksumm
CRC
Function Number
of bites
01 01 02
Value from the register
2200 - 2207
Value from the register
2208 - 2209
01hBDh
3F 82
Device
address
Checksum
CRC
Function Hi
01 01 08 98 00
Lo Hi Lo
0A
Register address Number of registers

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Readout of n-registers (code 03h)
Function inaccessible in data transmission mode.
Example: Readout of 2 registers beginning from the register with the 1DBDh
(7613) address:
Request:
Answer:
42 8B
Device
address
Checksum
CRC
Function Number
of bites
01 03 08
Value from the register
1DBD (7613)
40
Value from the register
1DBE (7614)
00 00 000000803F
52 43
Device
address
Checksum
CRC
Function
Register
address
Hi
01 03 1D BD 00
Register
address
Lo
Number of
registers
Hi
Number of
registers
Lo
02
78 F0
Device
address
Checksum
CRC
Function Number
of bytes
01 04 02
Value from the register
0FA3 (4003)
01
00
Answer:
C2 FC
Device
address
Checksum
CRC
Function
Register
address
Hi
01 04 0F A3 00
Register
address
Lo
Number of
registers
Hi
Number of
registers
Lo
01
Readout of n-input registers (code 04h)
The function is inaccessible in the data transmission mode.
Example: readout of 1 register with the 0FA3h (4003) address
Request:
Write of values into the register (code 06h)
The function is accessible in the data transmission mode.
Example: Write of the register with 1DBDh (7613) address.
Request:
Answer:
85 AD
Device
address
Checksum
CRC
Register
address
Hi
01 06 1D BD 3F
Register
address
Lo
00
80 00
Value from the register
1DBD (7613)
Function
85 AD
Device
address
Checksum
CRC
Register
address
Hi
01 06 1D BD 3F
Register
address
Lo
00
80 00
Value from the register
1DBD (7613)
Function

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Write into n-registers (code 10h)
The function is accessible in the data transmission mode.
Example: Write 2 registers beginning from the register with 1DBDh (7613) address.
Request:
03 09
Device
address
Check-
sum
CRC
Function
Number
of bytes
01 10 BD
Value from the register
1DBD (7613)
40
Value from the
register
1DBE (7614)
00 00 00000080
3F
Hi
1D
Lo Hi Lo
00 02 08
Register
address
Number of
registers
Answer:
Device
address
Checksum
(CRC)
Function
Register
address
Hi
Number of
registers
Hi
01 10 1D BD 00 D7 80
Register
address
Lo
Number of
registers
Lo
02
Write into n-bit registers (code 0Fh)
The function is accessible in the data transmission mode.
Example: Write of 2 registers beginning from the register with 0898h (2200)
address
Request:
Answer:
57 85
Device
address
Checksum
CRC
Function Hi
01 0F 08 98 00
Lo Hi Lo
02
Number of registers
Register address
BE 02
Device
address
Checksum
CRC
Function Number of
bytes
01 0F 08
Value for the register
2200 - 2201
03
Register
address
Hi Lo
98
Hi Lo
Number of
registers
00 02 01
Report identifying the device (code 11h)
Request:
Device
address
Checksum
(CRC)
Function
01 11 C0 2C
3F 80 00 00
Device
address Checksum
Function Number of
bytes
Device identier Device
state
Software version
number
01 11 06 8C FF
Answer:
A6 F3

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Device address - 01
Function - function No: 0x11;
Number of bytes - 0x06
Device Identifier - 0x8C
Device state - 0xFF
Software version No - version implemented in the module: 1.00
XXXX - 4-byte variable of float type
Checksum - 2 bytes in case of work in RTU mode
- 1 byte in case of work in ASCII mode
5.3. Map of module registers
Map of the SM4 series module registers Table 4
The value is located in the 32-bit register.
Registers can be read out and written.
Range of Value type Description
addresses
4000-4100 int (16 bits)
4200-4300 int (16 bits) The value is located in 16-bit registers.
The register content corresponds to the 32-bit
register contents from the 7600 area.
Registers can be read out and written.
7600-7700 float (32 bits)
The value is located in 16-bit registers.
The register content corresponds to the 32-bit
register contents from the 7500 area.
Registers are only for readout.
7500-7600 float (32 bits) The value is located in the 2-bit register.
Registers are only for readout.
2200-2215 bool (1 bit) The value is located in 1-bit register.
Registers can be read out and written.

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5.4. Set of module registers
Set of registers for readout the SM4 module. Table 5
Name
Unit
Quantity name
Constant identifying the device (8C)4000 7500 Identifer r-
The value is located in 16-bit registers. The register contents corre- sponds to the content of 32-bit registers from the area 7500.
The value is located in 32-bit registers.
Write(w) / Readout ( r)
4001 7501 Status 1 r - Status 1 is a register describing current
states of binary outputs.
4002 7502 Status 2 r - Status 2 is a register describing current
transmission parameters.
Description of the status 1 register
Bit-15...8 Not used
State 0
Bit-7 OUT8 output state
0 - inactive (0)
1 - active (1)
Bit-6 OUT7 output state
0 - inactive (0)
1 - active (1)
X X X X X X X X X X X X X X X X
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
bits
MSB LSB
OUT8 state
OUT7 state
OUT6 state OUT5 state
OUT4 state
OUT3 state
OUT2 state
OUT1 state
Bit-5 OUT6 output state
0 - inactive (0)
1 - active (1)
Bit-4 OUT5 output state
0 - inactive (0)
1 - active (1)
Bit-3 OUT4 output state
0 - inactive (0)
1 - active (1)
Bit-2 OUT3 output state
0 - inactive (0)
1 - active (1)
Bit-1 OUT2 output state
0 - inactive (0)
1 - active (1)
Bit-0 OUT1 output state
0 - inactive (0)
1 - active (1)

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Bit-15...6 Not used
State 0
Bit-5...3 Working mode and information unit
000 - interface turned on
001 - 8N1 - ASCII
010 - 7E1 - ASCII
011 - 7O1 - ASCII
100 - 8N2 - RTU
101 - 8E1 - RTU
110 - 8O1 - RTU
111 - 8N1 - RTU
Bit-1...0 Baud rate
000 - 2400 bit/s
001 - 4800 bit/s
010 - 9600 bit/s
011 - 19200 bit/s
100 - 38400 bit/s
101 - 57600 bit/s
110 - 115200 bit/s
Description of the Status2 register
X X X X X X X X X X X X X X X X
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
bits
MSB LSB
Operating mode
and information
unit
Baud rate

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Symbol Range Description
SM4 identifier
4200 Identifier o8C
Write (w)/Readout (r)
0 2400
1 4800
2 9600
3 19 200
4 38400
5 57600
6 115200
0 Interface switched off
1 ASCII 8N1
2 ASCII 7E1
3 ASCII 7O1
4 RTU 8N2
5 RTU 8E1
6 RTU 8O1
7 RTU 8N1
Baud rate of RS-485 interface
transmission (bit/s)
Transmission mode through RS-485
interface
Device address in the RS-485 interface
network
4203 Address w/r 1... 247
Register confirming changes of
transmission parameters
Apply w/r 0... 1
Rate w/r 0... 6
2200 Output 1 State of the output 1
The value is located in 1 bit registers. The register contents correspond to the contents of 32-bit registers from the area 7600 The value is located in 16 bit registers. The register contents correspond to the contents of 32-bit registers from the area 7600 The value is located in 32 bit registers.
7600
4201 7601
7603
4204 7604
4205 7605 w/r 0... 1
Set of registers for readout and write the SM4 module - in the version with
eight outputs of OC type.
Table 6
Mode w/r 0... 7
4202 7602