Acromag BusWorks 900EN Series User manual

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Find the Acromag BusWorks 981EN-4012 at our website: Click HERE

BusWorks® 900EN Series –Modbus TCP/IP
10/100MB Industrial Ethernet I/O Modules
Model 981EN-4012 12 Active-Low Digital Inputs
Model 982EN-4012 12 Sinking Digital Outputs
Model 983EN-4012 12 Tandem Digital Input/Output
USER’S MANUAL
ACROMAG INCORPORATED Tel: [phone]
30765 South Wixom Road Fax: [phone]
Wixom, MI 48393-2417 U.S.A.
Copyright 2003-2014, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice. 8500717M

BusWorks® 981/982/983EN Module User’s Manual Modbus TCP/IP Digital I/O
__________________________________________________________________
Acromag, Inc. Tel:[phone] Fax:[phone] Email:[email protected] ttp://www.acromag.com
2
IMPORTANT SAFETY CONSIDERATIONS
You must consider the possible negative effects of power, component,
wiring, sensor, or software failure in the design of any type of monitoring or
control system. This is very important where property loss or human life is
involved. It is important that you perform satisfactory overall system design
and it is agreed between you and Acromag, that this is your responsibility.
GETTING STARTED
MOUNTING AND DIMENSIONS………………………
3
CONTROLS & INDICATORS..…………………………
3
ISOLATION BARRIERS..……………………………….
3
I/O PULLUP RESISTOR INSTALLATION……………
4
CONNECTIONS…………………………………………
4
DIN-Rail Mounting And Removal………………
4
Network…………………………………………….
5
Power……………………………………………….
6
Digital Inputs………………………………………
7
Digital Outputs..…………………………………..
8
Earth Ground..………………………………….….
9
WEB BROWSER………………………………………..
10
Home Page…………………………………………
10
Password Configuration Page.………………...
11
Network Configuration……..……………………
11
I/O Mapping Page (Optional i2o Function)..…
14
Test Page…………………………………………..
15
TROUBLESHOOTING………………………………….
17
Diagnostics Table……………………………..….
17
Trouble Browsing Your Module?.....................
18
Getting Out Of Trouble…………………………..
18
TECHNICAL REFERENCE
KEY FEATURES…………………………………………
19
HOW IT WORKS………….……………………………..
20
ABOUT MODBUS TCP/IP….…………………………..
21
IP Addressing…………..…………………………
21
Dynamic Host Configuration Protocol………..
23
Domain Name System DNS)……………………
23
MODBUS REGISTERS…………………………………
23
Register Functions……………………………….
23
Register Mirroring……….……………………….
24
Data Types…………………………………………
25
Register Map………………………………………
26
SPECIFICATIONS………………………………………
29
Model Numbers….………………………………..
29
Digital Inputs…………………....…………………
29
Digital Outputs………………..…………………..
29
General Specifications…………………………..
30
Enclosure and physical………………………….
30
Agency approvals…..…………………………….
31
Environmental…………………………………….
31
Ethernet interface………………………………...
33
Controls & Indicators…………………………….
33
ACCESSORY CABLES……..………………………….
34
REVISION HISTORY…….…..………………………….
36
TABLE OF
CONTENTS
Symbols on equipment:
Means “Refer to User’s
Manual (this manual) for
additional information”.
The information of this manual
may change without notice.
Acromag makes no warranty
of any kind with regard to this
material, including, but not
limited to, the implied
warranties of merchantability
and fitness for a particular
purpose. Further, Acromag
assumes no responsibility for
any errors that may appear in
this manual and makes no
commitment to update, or
keep current, the information
contained in this manual. No
part of this manual may be
copied or reproduced in any
form without the prior written
consent of Acromag, Inc.
For additional information,
please visit our web site at
www.acromag.com and
download our whitepaper
8500-765, Introduction To
Modbus TCP/IP, or 8500-648,
Introduction to Modbus.
Windows® is a registered
trademark of Microsoft
Corporation.
!

BusWorks® 981/982/983EN Module User’s Manual Modbus TCP/IP Digital I/O
___________________________________________________________________
Acromag, Inc. Tel:[phone] Fax:[phone] Email:[email protected] ttp://www.acromag.com
3
46 44 43 41 33
DC-
32
9
5 6
1 20
11
7
3
TB1
EXC1
11
RTN
CH1
13
CH10
CH2
14
CH9
RTN
16
EXC3
TB4
TB4
EXC2
21
CH4
22
CH6
24
GND
CH7
25
TB3
CH. I/O STATUS
RS T
A C T
LINK
ST
45 42
P W R
DC+
31
L
C
8
4
RUN
10
3.75 (95.3)
TB1
CH0
12
CH11
TB2
TB2
CH3
15
CH8
CH5
RTN
2623
TB3
4.68 (118.9)
3.90
(99.1)
E THE R NE T
DFT
DIGITAL IN or OU T
2.34 (59.4)
DIGITAL IN or OU T
Acromag
DIGITAL IN or OU T
1.05
(26.7) "T"RAILDINMOUNTING
DINEN 50022, 35mm 4.35
(110.5)
NOTE: DimensionsAreINCHES (MILLIMETERS).
MODEL 981/982/983EN ENCLOSURE DIMENSIONS
Model 983EN-4012 Shown
(981EN-4012 & 982EN-4012 Sim ilar)
98
54
RST
11
6 7
13
44
16
41
21 24
33
10
ACT
2 3
ST
TB1
CH 1 CH10
RTN EXC3
EXC2
CH 6 GND
TB3
LINK
10
TB1
11
46
12 14 15
45 43 42
22 2523
32
26
31
EXC1 RTN
CH 0 CH 2
CH 3
CH11
CH 9
TB4
CH 8
TB2
CH 4
CH 7
CH 5
DC-
RTN DC+
TB3
CH. I/O STATUS
ETHERNET
DFT
RUN
TB2
TB4
(PLUG-INTYPE)
TERMINALBLOCKS
RJ45ETHERNET
CONNECTOR
ETHERNETACTIVITY
LED(YELLOW)AND
LINK LED (GREEN)
I/OLED's(YELLOW)-
ON WHENOUTPUTS ARE
CONDUCTINGORINPUTS
ARE ASSERTED LOW.
Acromag
RUN/PWRLED(GREEN)
DIGITAL IN or OUT
PWR
REMOVABLE
RESET/DEFADDRESS
TOGGLE SWITCH:
TOGGLE RIGHTTORESET
TOGGLE LEFTTOSET
DEFAULTADDRESS
MODULE STATUS
LED(YELLOW)
DIGITAL IN or OUT
Model 983EN-4012 Shown
(981EN-4012& 982EN-4012Similar)
DIGITAL IN or OUT
The toggle switch is used to toggle the module into or out of Default Mode
(toggle left), or to reset the module (toggle right). In Default Communication
Mode, the yellow ST LED blinks slowly and the module assumes a fixed
static IP address of “128.1.1.100”, a default subnet mask of “255.255.255.0”,
a default username of “User”, and a default password of “password00”.
MOUNTING AND
DIMENSIONS
Unit mounts to “T” type DIN
rails (35mm, type EN50022).
Units may be mounted side-
by-side on 1-inch centers.
WARNING: IEC Safety
Standards may require that
this device be mounted within
an approved metal enclosure
or sub-system, particularly for
applications with exposure to
voltages greater than or equal
to 75VDC or 50VAC.
CONTROLS &
INDICATORS
Green Run LED is ON if power
is on and will blink in “wink” ID
mode.
Yellow ST LED blinks ON/OFF
slowly if module is in default
communication mode and
blinks rapidly if a watchdog
timeout has occurred.
Yellow I/O LED’s turn ON if
corresponding output switch is
closed, or input asserted low.
Green LINK LED ON if auto-
negotiation has successfully
established a connection.
Yellow ACT LED signals PHY
network Activity (busy).
ISOLATION BARRIERS
Dashed Lines denote isolation
barriers.
The I/O circuit, network, and
power circuit are isolated from
each other for safety and noise
immunity.
44 41 33
PWR
NETWORK
13
CH 1
16
RTN
21 24
CH 6
TB3
TB1
CH10 EXC3
EXC2
GND
46 4345
RX
42
DC-
DC+
32 31
TB1
11 1412
CH 2 CH 0
TB2
2215
CH 4
CH 3
TX
5V/3V
TB4
TB4
25 2623
CH 7
CH 5
RTN
DC
PWR
EXC1 RTN
CH 9
CH11
TB2
CH 8
DIGITAL I/O
DIGITAL IN or OUT
DIGITAL I/O
DIGITAL IN or OUT
DIGITAL I/O
DIGITAL IN or OUT
TRANSFORMER
TB3
981/982/983EN
ISOLATION
DIAGRAM
TRANSFORMER

BusWorks® 981/982/983EN Module User’s Manual Modbus TCP/IP Digital I/O
__________________________________________________________________
Acromag, Inc. Tel:[phone] Fax:[phone] Email:[email protected] ttp://www.acromag.com
4
TB1
TB4
R7
X1
X3
CH. I/O STATUS
9
5 6
1 2
10
1 2
C H 7
3 4 5 6 7 8 2 3
7 6
5 6
C H 1
4 3
C H 9
8
1
E TH ER NE T
A C T
ST
Acromag
EXC+
RTN
RTN EXC+
TB2
EXC+
RTN
TB3
X2
R2
LINK
DFTRS T
0
11
7
3
8
4
RUN
RESISTOR
NETWORK
1 4
C H 3C H 2
C H 5C H 4
8 5
C H 10C H 11
7
C H 0
2
C H 8
PORT1 PORT0
R11
PORT2
USE SMALLSCREW DRIVER
TO PRY OFFSIDE COVER.
COVER IS HELD IN PLACE
WITH EIGHTSNAP PINS.
BASEBOARD
SOCKET
BOURNS4308H-102-562
OREQUIVALENT
WHEN REPLACING COVER,
ALIGN ALL PINS, THEN SNAP
TOGETHER IN SEQUENCE
TO SECURE COVER.
C H 6
PLUG-INI/OBOARD
(TurnedFaceUp)
CAREFULLY SEPARATE
I/OBOARD FROMBASE
BOARD.
PORT1
(CH4-7)
PORT0
(CH0-3)
PORT2
(CH8-11)
CAUTION: HANDLECIRCUIT
USINGESD-SAFEPROCEDURES.
981EN/982EN/983EN SHOWN
WITHSIDECOVERREMOVED
ANDI/OBOARDSEPARATED
PULLUPSARELOCATEDINSOCKETS
ONPLUG-IN I/OBOARD ASSHOWNHERE
5.6K x4ISOLATED
0.5W RESISTORS SERIES 981PB/982PB/983EN SIP
PULLUP RESISTOR SOCKET LOCATION
EACH PORTHAS A SIP RESISTOR
LOCATED AS SHOWN ATRIGHT.
SIP RESISTORS PULL-UP THE I/O
CHANNEL TO THE EXC SUPPLY.
SIPS ARE INSTALLED IN SOCKETS
X1, X2, AND X3.
PORT0SIP =R2INSTALLED IN X1
PORT1SIP =R7INSTALLED IN X2
PORT2SIP = R11 INSTALLED IN X3
THE SIP IS AN ISOLATED RESISTOR
NETWORK OF4ELEMENTS.
FACTORY SIP VALUE IS 5.6K OHMS.
POWER IS 0.5W PER ELEMENT.
THE EVEN-NUMBERED PINS OF
THE SOCKETS ARE TIED TO THE
PORTEXCITATION TERMINAL.
WHEN REPLACING SIPS OR
CHANGING VALUES, WATCH
THATPOWER DISSIPATION
DOES NOTEXCEED SIP RATING.
45 44 42 41 33
DC+
31
12 13 15 16 21 23 24 26
TB1
GND
46 43
P W R
DC-
32
11 14 22
TB4
25
TB3TB3
PUSH
TB2
"T"TYPE
DINRAIL
PUSH SCREWDRIVER AS SHOWN
TO TILTAND LIFTMODULE OFFRAIL
Remove TerminalBlocksOnThis
SideToProvideClearance
Any Series9XXEN EthernetModule
MODULE REMOVAL
FROM DIN RAIL
PRY WITH SCREWDRIVER
INSERTED IN SLOTHERE
(DO NOTTWISTTOAVOID
DAMAGINGPLASTIC TAB)
USE YOUR FINGER TO APPLY
DOWNWARD PRESSURE HERE
AS YOU LIFTAND TILTMODULE
TOREMOVE ITFROMRAIL
To Remove or Replace Factory Pullup Resistors…
Locate pullup resistor SIP’s installed in sockets of plug-in I/O board as
shown above. You must remove the right side cover and separate the two
boards to remove or install these resistors. 5.6K resistor SIP’s are installed
from the factory. Remove these resistors if I/O channels are pulled up
externally. Limit power in each SIP resistor to less than 0.5W.
When attaching the module to the
T-type DIN rail, angle the top of the
unit towards the rail and locate the
top groove of the adapter over the
upper lip of the rail. Firmly push the
unit towards the rail until it snaps into
place. To remove, first separate the
input terminal block(s) from the
bottom side of the module to create a
clearance to the DIN mounting area.
Next, while holding the module in
place from above, insert a
screwdriver into the lower arm of the
DIN rail connector and use it as a
lever to force the connector down
until the unit disengages from the rail
(do not twist the screwdriver to avoid
damaging plastic).
I/O PULLUP
RESISTOR
INSTALLATION
You must connect excitation
and/or install pull-ups for
proper I/O operation. I/O
terminals must not be left
floating.
5.6KΩ I/O pull-up resistors are
already installed from the
factory. You do not need to
refer to this information unless
you need to change or remove
these resistors.
If your application delivers
power to the I/O terminals
rather than the excitation
terminal, the internal pull-ups
should be removed to avoid
coupling current into adjacent
port channels.
CONNECTIONS
DIN-Rail
Mounting & Removal

BusWorks® 981/982/983EN Module User’s Manual Modbus TCP/IP Digital I/O
___________________________________________________________________
Acromag, Inc. Tel:[phone] Fax:[phone] Email:[email protected] ttp://www.acromag.com
5
1
8
7
5
4
2
1
100M
100M
CLIP
8
6
3
CABLE
8
1
10Base-T CAT 5 UTP/STP
Not Used
Not Used
Not Used
Not Used
Receive -
Receive +
RJ-45CONNECTOR
SPEED
PIN
DISTANCE
Transmit -
Transmit +
MDI-X WIRING
100Base-T CAT 3, CAT 4, orCAT 5 UTP/STP
NoteCrossoverConnections
MINIMUMRECOMMENDEDCABLE
Not Used
Not Used
Not Used
Not Used
Transmit -
Transmit + ETHERNET PORT
RJ45MDI ANDMDI-X CONNECTIONS
Receive-
Receive+
MDI WIRING
The Ethernet port of this module is wired MDI and does not include
automatic crossover. The Ethernet port of your PC is also wired MDI and
may not include automatic crossover. As such, you must use a crossover
cable like that shown below when connecting this device directly to a PC.
1
1
3
6
1
6
2
3
1
8
281
8
8
1
PINS: 1TO 3
2TO6
3TO1
6TO2
RJ45(ClipSideDown) RJ45(ClipSideDown)
FOR DIRECTPC TO
ETHERNETMODULE
CONNECTIONS
CROSSOVER CABLE
FOR MDI TO MDI
OR MDI-X TO MDI-X CROSSOVER
CONNECTIONS
CONNECTIONS
Network
For 100Base-TX systems, at a
minimum, use data grade
Unshielded Twisted-Pair
(UTP) wiring that has a 100Ω
characteristic impedance and
meets the EIA/TIA Category 5
wire specifications.
It is recommended that you
use a crossover CAT-5 cable
to connect this device to your
PC.
For 10Base-T systems, you
may use Category 3, Category
4, or Category 5/5E UTP/STP
cable.
In either case, you are limited
to 100 meters between any
two devices.
A crossover cable simply
connects the differential
transmit pair on each end, to
the receive pair on the
opposite end.
Use a standard (direct) cable
when connecting to a hub or
switch port, which are
generally wired MDI-X.
910
5 6
1 2
CH. I/O STATUS
ACT
8
4
0
RUN
DA
11
7
3
ST
ETHERNET
Acromag
RS
LINK
HOSTPC
(UseCrossover Cable)
CAT-5UTPCABLE
UPTO100METERS
Order Acromag CableModel 5035-360
Note:ThisMDI-to-MDIconnectionrequirestheuseofacrossover cable.
HOSTPCCONNECTEDDIRECTLYTOAMODULE Acromag 983EN-4012
EthernetModule.
Theethernetportofthis
moduleisnotautomatic
MDI/MDI-Xcrossover
andiswiredMDI.

BusWorks® 981/982/983EN Module User’s Manual Modbus TCP/IP Digital I/O
__________________________________________________________________
Acromag, Inc. Tel:[phone] Fax:[phone] Email:[email protected] ttp://www.acromag.com
6
Refer to the Accessory Cables section at the back of this manual for more
information on accessory cables including patch and crossover cables
available from Acromag and other vendors.
TIP: You can significantly enhance the EMI/RFI performance of your
network connections by using Category 5E STP cable (Shielded Twisted
Pair) with shielded RJ45 plug connectors. This will also help to protect your
installation from damage due to ESD (Electro-Static Discharge). The use of
shielded cable is strongly recommended for installations in harsh industrial
environments and/or in the presence of strong electrical fields.
You can use an Ethernet switch or switching hub to build a network of
Ethernet modules, similar to that shown below. This drawing shows how to
network-connect these modules to a 5-port Ethernet switch (Acromag Model
900EN-S005). Note that the 900EN-S005 switch includes automatic
MDI/MDI-X crossover and straight-through or crossover cable(s) may be
used, but it is generally not good practice to use crossover cables when
connecting to an auto-crossing switch.
Power
✓
Connect 15-36V DC to the power terminals labeled DC+ & DC-. Observe
proper polarity. For supply connections, use No. 14 AWG wires rated for at
least 75C. CAUTION: Do not exceed 36VDC peak.
CAUTION: Risk of Electric Shock –More than one disconnect switch may
be required to de-energize equipment before servicing.
CONNECTIONS
Network
Voltage
Current
15VDC
123mA
18VDC
106mA
24VDC
80mA
36VDC
59mA
S1 S2
DC-
33
DC+
32
RS
109
65
21 3
98
54
10
DA
11
7
2 3
ST
8
4
0
10
76
2 3
ST
98
54
10
DA
11
7
2 3
ST
100M
LK /
P1
X3 X4
TB 3
CH. I / O STATUS
ACT
ACT
CH. I / O STATUS
RUN
X5
X5
X4
X1
GND
34
DC+
31
8
4
0
RUN
DA
LI NK
11
7
ST
LI NK
10
6
DARS
LI NK
911
5
1
RS
LI NK
10
6
RUN
COL
ACT
X5
X3
X2
X1 X2
PG M
PO RT
PUSH TO RESET
ACT
ACT
ETHERNET
Ac ro m a g
CH. I / O STATUS
CH. I / O STATUS
PO WER
RS
RUN
RUN
ETHERNET
SWI TCH
Ac ro m a g
ETHERNET
ETHERNET
Ac ro m a g
Ac ro m a g
ETHERNET
Ac ro m a g
HOSTPC
Acromag9xxEN-4012
Ethernet Modules.
Theethernetportofthese
modules arenotautomatic
MDI/MDI-X crossover, but
theuseofanauto-crossing
switcheliminatestheneed
tomakeadistinctionbetween
straight-throughandcrossover
cables.
(Straight-ThroughorCrossoverCable)
CAT-5UTP CABLE
UP TO 100METERS
(Straight-ThroughorCrossoverCable)
OrderAcromagCableModel 5035-355
CAT-5UTP CABLE
UP TO 100METERS
ETHERNET
SWITCH
DI P SW S1/ S2
CFG O PTI O NS
CAT-5UTP CABLE
UP TO 100METERS
(Straight-ThroughorCrossoverCable)
(Straight-ThroughorCrossoverCable)
CAT-5UTP CABLE
UP TO 100METERS
CAT-5UTP CABLE
UP TO 100METERS
TheethernetportofthePCis
generallynotautomaticMDI/MDI-X
crossoverandiswiredMDI.
BecausetheAcromagethernet switch
900EN-S005is automaticMDI/MDI-X
crossover, useof adirect(straight-through)
orcrossovercableispermissible.
IMPORTANT: IFTHE HOSTPC CONNECTS DIRECTLY TOTHE MODULE,
YOU MUSTUSE A CROSS-CONNECTCABLE (MDI-X), AS BOTH THE PC
ANDTHE 9XXEN MODULE ETHERNETPORTS ARE WIREDMDI.
ETHERNETSWITCHES ANDHUBS ARE WIREDMDI-X.
THE ACROMAGETHERNETSWITCHIS AUTOMATICMDI/MDI-X AND
ELIMINATES THE NEEDFORMAKINGA DISTINCTION BETWEEN
THE USE OFSTRAIGHT-THROUGH (MDI)AND CROSSOVER(MDI-X)
CABLE CONNECTIONS.
Acromag900EN-S005
5-PortEthernetSwitch
orequivalent.
Theethernetportsofthis
switchareautomatic MDI/MDI-X
crossinganddonot require
crossovercables.
USE OF AN ETHERNET SWITCH TO NETWORK
A HOST PC TO MORE THAN ONE MODULE
Acromag offers a straight-through patch cable (Model 5035-355), or a
crossover cable (Model 5035-360) for use with Series 9xxEN modules.
+
TB3
PWR
33
GND
DC+
31
EARTH
GROUND
15 TO 36VDC
DC-
32
TB3 INPUT POWER
IS ISOLATED

BusWorks® 981/982/983EN Module User’s Manual Modbus TCP/IP Digital I/O
___________________________________________________________________
Acromag, Inc. Tel:[phone] Fax:[phone] Email:[email protected] ttp://www.acromag.com
7
5.6K
ROFF(0)
+5V
ON(1)
I/O
100K
ON(1)
RTN
I/O
EXC
TO OTHER 3
CHAN OF PORT
5.6K
100K
ON(1) R
ON(1)
OFF(0)
OFF(0)
SIP RESISTOR
INSTALLED
IN SOCKET
TVS
(48V)
EXC
(Active-LOW)
+5V
RTN
(Active-LOW)
TO OTHER 3
CHAN OF PORT
CH
LED
OFF(0)
SIP RESISTOR
INSTALLED
IN SOCKET
TVS
(48V) ON(1) OFF(0) CH
LED
SIMPLIFIED983PBCHANNEL(TandemInput/Output)
SIMPLIFIED981PBCHANNEL(InputOnly)
IMPORTANT –External Fuse: If unit is powered from a supply capable of
delivering more than 1A to the unit, it is recommended that this current be
limited via a high surge tolerant fuse rated for a maximum current of 1A or
less (for example, see Bel Fuse MJS1).
✓Connect digital input signals to the input terminals (see figures below):
16
RTN
15 13 12
TB1
OR
+5V
14 11
EXC
5.6K
100K
DIGITAL IN or OUT
CH03
CH01
CH00
OPEN
COLLECTOR
OR DRAIN
TB1
CH02
+5V
983EN SIMPLIFIED INTERNAL I/O
CONNECTIONS (ONE CHANNEL)
LOW-SIDE
SWITCH
PULLUP
(IN SOCKET)
SHIELDED CABLE
DIGITAL INPUT CONNECTIONS
Refer to the examples below for examples of other types of input
connections.
I
I/O R
RTN
100K
V
N.O. 983EN
ONLY
+5V
EXC 5.6K
CH
OTHERTHREE
CHANOFPORT
CH LEDIS ON FOR
ACTIVE-LOW INPUT
ON983ENUNITS, MAKE
SURE OUTPUT IS OFF
(0) FORINPUT ONLY
APPLICATIONS.
SIP INSTALLED
981EN& 983EN
DRY-CONTACT RELAYCONNECTIONS-NORMALLY OPEN
ADJUST VOLTAGE (V) AS
REQUIREDTO CHANGE
EXCITATIONCURRENT( I)
ORCHANGE SIP RESISTOR
VALUE.
CONNECTIONS
Digital Inputs
(981EN & 983EN Only)
Inputs are active-low.
Input threshold is TTL
compatible.
Limit Input Voltages to
35V maximum.
Note: Do not allow EXC or
unused inputs to float. If pull-
ups are installed, this will
cause one I/O signal to pull the
other floating port channels via
the pull-ups and common EXC
lead connection.
Normally Open Dry Contact
Relay.
Normally Closed Dry Contact
Relay.
R
V I/O
N.C. +5V
EXC
100K
RTN
983PB
ONLY
OTHERTHREE
CHANOFPORT
5.6K
CH
ADJUST VOLTAGE (V) AS
REQUIREDTO CHANGE
EXCITATIONCURRENT( I)
ORCHANGE SIP RESISTOR
VALUE.
CHLEDIS ON FOR
ACTIVE-LOW INPUT
ON983ENUNITS, MAKE
SURE OUTPUT IS OFF
(0) FOR INPUT ONLY
APPLICATIONS.
SIP INSTALLED
981EN& 983EN
DRY-CONTACT RELAYCONNECTIONS -NORMALLY CLOSED

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✓Connect digital outputs to the output terminals. Refer to figures below:
IMPORTANT –Add Protection With Inductive Loads: Outputs already
include internal reverse-bias shunt diodes to help protect the output switch
from damage due to the high reverse-bias voltages generated when
switching inductive loads. You should add external protection near the
inductive load to prevent these transients from being sent along the
connection wires. Place a diode (1N4006 or equivalent) across an inductive
load with the cathode to (+) and the anode to (-).
Refer to the examples below for other types of output connections.
CONNECTIONS
Digital Inputs
(981EN & 983EN Only)
Digital TTL Logic Monitor
Note: Do not allow EXC or
unused inputs to float. If pull-
ups are installed, this will
cause one I/O signal to pull the
other floating port channels via
the pull-ups and common EXC
lead connection.
Digital Outputs
(982EN & 983EN Only)
Outputs are the open-drains of
DMOS mosfet switches for DC
current-sinking applications
only.
Outputs turn OFF (open)
following a software or power-
on reset of the module.
CONNECTIONS
Digital Outputs
(982EN & 983EN Only)
Examples:
-Solid-State Relay (SSR) or
LED Driver
-Relay Coil or Solenoid Driver
(Note Protection).
-Lamp Driver.
ON (1)
5.6K
R
EXC
R
+5V
OFF(0)
RTN
OFF(0) TVS
(48V)
100K
ON (1)
CH
LED
I/O
CH
LED
OFF(0)
EXC
ON (1)
5.6K
OFF(0)
RTN
OFF(0) TVS
(48V)
SIPRESISTOR
INSTALLED
IN SOCKET
ON (1)
ON (1)
I/O
(Active-LOW)
TOOTHER 3
CHAN OFPORT
(Active-LOW)
TOOTHER 3
CHAN OFPORT
SIPRESISTOR
INSTALLED
IN SOCKET
SIMPLIFIED 983EN CHANNEL (Tandem Input/Output)
SIMPLIFIED 982EN CHANNEL (Output Only)
V
ON
R
100K
5.6K
CH
TO
LOAD/LINE
LED ON
+5V
R
RTN
982EN/983EN
OFF
I/O
(N.O.)
SSR
EXC
TO
LOAD/LINE
OFF
TOOTHER3
CHANOFPORT
983EN
SIP RESISTOR
INSTALLED
INSOCKET
SOLID-STATERELAY(SSR)ORLEDDRIVER
LIM
ON
RTN
5.6K
983EN
100K OFF
OFF
ON
5V
R
I/O
EXC
TOOTHER3
CHANOFPORT
OFF
+5V
R
CH
ON
RLIMIS INCLUDED TO
PROTECTDRIVERIF
TANDEMOUTPUTIS
INADVERTANTLY
TURNED ON.
SIP RESISTOR
INSTALLED
INSOCKET
981ENor 983EN
ON983EN, KEEP OUTPUTS TURNEDOFF
TO MONITOREXTERNALLOGICSIGNAL
LOGIC(TTL)MONITOR(981EN&983ENONLY)
V
L
D
A
A
BON
V
V
OUT3
OUT2
OUT1
15
CH03
14
CH02
12
CH00
11
EXC +5V
0-35V D
OUT0
L
TB1
16
RTN
13
CH01
TB1
DIGITAL IN orOUT
SHIELDEDCABLE
OFF
0-35V
OUTPUTSRATED
TO35V/500mADC
EARTHGROUND
5.6K
100K
FORGREATEROUTPUTDRIVE,
CONNECTANINTERPOSINGRELAY
INTERNALOUTPUT
PULLUPSAREOPEN
OPEN-DRAINOUTPUTS
SHARERETURN
PULLUP
(INSOCKET)
983ENSIMPLIFIEDINTERNALI/O
CONNECTIONS(ONECHANNEL)
DIGITALOUTPUTCONNECTIONS
POSSIBLEVARIATIONS- CURRENTSINKINGDCAPPLICATIONSONLY

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Note: Per UL, when the outputs are used to control interposing relays for
switching AC and DC devices of higher voltage/current, the coil ratings for
the interposing relay shall not exceed 24VDC, 100mA.
✓Connect Earth Ground as shown in the connection drawings above.
Additionally, connect the GND terminal (TB3-33) to earth ground.
The ground connections noted are recommended for best results. If
sensors are already grounded, use caution and avoid making additional
ground connections which could create ground loops.
The plastic module housing does not require earth ground.
Earth Ground
Warning: To comply with
safety and performance
standards, use shielded cable
and connect earth ground as
noted. Failure to use good
wiring and grounding practices
may be unsafe and hurt
performance.
CH
V
+5V
ON
RTN
5.6K
100K OFF
983EN
I/O
EXC
TOOTHER3
CHANOFPORT
OFF
R
5-35V
1N4006
RELAYCOIL/SOLENOIDDRIVER
ON
SIP RESISTOR
INSTALLED
INSOCKET
982EN/983EN
V
ON
R
100K
5.6K
CH
OFF
5-35V I/O
EXC
OFF
ON
+5V
983EN
SIP RESISTOR
INSTALLED
INSOCKET
RTN
982EN/983EN
TOOTHER3
CHANOFPORT
INCANDESCENT LAMPCONTROL

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10
This module supports Modbus over TCP/IP. You may use your own
software to issue Modbus commands to this module (see Modbus
Registers), or you may use a standard web browser, as these modules have
built-in web pages that allow you to setup and control the module. Simply
execute your web browser, type the IP address assigned to your module in
the “Address” window (http://128.1.1.100/ for our example), click [Go], and
you will be presented with a Home Page window similar to that shown below:
The Home Page provides buttons to access the other web pages of this
module that are used to configure the network parameters, change the user
name and password, and operate the module. For each new browser
session that accesses the Home Page of this module, you will be presented
with a window prompting you to enter the current User Name and Password
as shown below. This information is required before the program will allow
you to make any other selections. The default user name and password
is “User” and “password00” respectively.After entering these defaults,
you may wish to invoke the Password Configuration Page to change these
parameters to something more meaningful for you.
IMPORTANT: If you forget
your user name and password,
you can always toggle the
module into default mode via
the default mode toggle switch
at the front of the module, and
the password and username
will revert to the original
defaults noted above, thus
allowing you to re-invoke the
Password Configuration Page
and change the username and
password as required.
WEB BROWSER
Home Page

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Use up to 20 alphanumeric characters (case sensitive) to specify your
username, and 10 alphanumeric characters (case sensitive) to specify a
password. You will have to type in these entries twice to help prevent errors.
Click the submit button to write your changes to the module.
After completing your username/password changes, click on the appropriate
button at the bottom of the page to select another web page. If you made
changes, you may be prompted to re-enter your new username and
password before being permitted to move to other pages.
After setting your username and password, you can click the “Network
Configuration Page” button and a screen similar to that shown on the
following page will appear. Use this screen to set the network configuration
parameters for your module. You may have to consult your network
administrator to complete the contents of this page.
An IP Address is a unique identification number for any host (this module)
on any TCP/IP network (including the internet). The IP address is made up
of four octets (8 bits), each octet having a value between 0-255 (00H-FFH).
It is expressed here in decimal form, with a period placed between octets.
A Static IP Address is as the name implies—static, and represents a unique
fixed IP Address that is generally assigned by your service provider or
system administrator. The Default Mode static IP address assigned to this
module is 128.1.1.100 (refer to product side label).
WEB BROWSER
Password
Configuration Page
WEB BROWSER
Network Configuration

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NOTE: In order to network your PC with an Acromag module, you may have
to consult with your network administrator and either temporarily change
your TCP/IP configuration (see TCP/IP Properties of Network Configuration
in Windows), or create a separate private network using a second network
adapter installed in your PC (recommended). The necessary steps will vary
with your operating system. Refer to Acromag Application Note 8500-734 to
help accomplish this (located on the CDROM shipped with your module or
via download from our web site at www.acromag.com).
The Number of Sockets refers to the number (1-10) of Modbus TCP/IP
access points to allow for this host. The default allows up to 10 sockets, but
you can restrict access by reducing this number. Internally, the module uses
port number 502 which is reserved for Modbus.
The DNS Server refers to the IP address of the Domain Name Server used
on this network. A DNS server relates symbolic names to actual numeric IP
addresses, while the DHCP server is responsible for dynamically passing out
IP addresses.
A Subnet Mask is used to subdivide the host portion of the IP address into
two or more subnets. The subnet mask will flag the bits of the IP address
that belong to the network address, and the remaining bits correspond to the
host portion of the address. The unique subnet to which an IP address
refers to is recovered by performing a bitwise AND operation between the IP
address and the mask itself, with the result being the sub-network address.
Gateway refers to the IP Address of the gateway, if your local area network
happens to be isolated by a gateway. Typically, it is assigned the first host
address in the subnet. If a gateway is not present, then this field should
contain an unused address within the host subnet address range.
The Host Name is the name to be assigned to this host if its address
happens to be assigned dynamically using DHCP.
The Active IP Address refers to the current IP Address being used by this
host, as opposed to any new assignments being made via this page.
Note that Acromag Series
9xxEN Ethernet I/O modules
may take from 3 to 30 seconds
to boot upon power-up,
depending on your network
configuration and whether a
DHCP server is present.
This module can be placed
into a default communication
mode via the DFT toggle
switch at the front of the
module.
Default Mode uses a static IP
address of “128.1.1.100”, a
default subnet mask of
“255.255.255.0”, a default
username “User”, and a
default password
“password00”.
WEB BROWSER
Network Configuration

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The MAC Address refers to the Media Access Control Address that
uniquely identifies the hardware of this device. This is a unique fixed
address assigned to this module at the factory. In IEEE 802 networks, the
Data Link Control (DLC) layer of the OSI Reference Model is divided into two
sublayers: the Logical Link Control (LLC) layer, and the Media Access
Control (MAC) layer. The MAC layer interfaces directly with the network
media (each different type of network media requires a different MAC layer).
By default, the module is setup to use Static IP Addressing and a Static IP
Address of 128.1.1.100. You can optionally choose to have the IP address
assigned dynamically via DHCP/BOOTP, or DHCP/BOOTP w/Fallbacks.
This will also require that you specify a valid Host Name. Note that
DHCP/BOOTP w/Fallback will revert to the static IP address if your DHCP or
BOOTP server cannot be found at the address specified.
In general, BOOTP (BOOTstrap Protocol) refers to an internet protocol that
enables a diskless workstation to discover its own IP address, the address of
a BOOTP server on the network, and a file to be loaded into memory to boot
the machine. This enables the workstation or device server to boot without
requiring a hard or floppy disk drive. BOOTP works similar to DHCP, but is
usually found in older systems. This protocol is defined by RFC 951.
DHCP (Dynamic Host Configuration Protocol) refers to a protocol for
assigning dynamic IP addresses to devices on a network. With dynamic
addressing, a device can have a different IP address every time it connects
to the network. In some systems, it can even change while it is still
connected. DHCP also supports a combination of static and dynamic IP
addresses. DHCP/BOOTP with fallback will revert to static IP addressing if
the DHCP or BOOTP server cannot be found.
The unit includes a default address toggle switch to cause the module to
assume a fixed default static IP address (128.1.1.100). This switch is at the
front of the module and is used to toggle the module into, or out of Default
Mode. If you use the toggle switch at the front of the module to place the
module in default mode, then “Default Communications Mode” will be
indicated at the bottom of this screen.
Click the Submit button to complete any changes made on this page.
Click the Wink On/Off button to toggle the module in/out of “wink” ID mode.
In this mode, the module’s green RUN LED will blink to confirm identification.
Refer to the Technical Reference section of this manual to learn more about
IP Addressing terms and concepts.
The Default Communication
Mode uses a static IP address
of “128.1.1.100”, a default
subnet mask of
“255.255.255.0”, a default
username of “User”, and a
default password of
“password00”.

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14
This module includes special remote messaging functionality (i2o, input-to-
output communication) that allows it to send its digital input information
(983EN only) to an output channel on another Acromag 982EN-4012 or
983EN-4012 digital output module. The I/O Mapping page shown below is
used to specify the static IP address of the 982/983EN module to send an
input channel’s data to, either upon change-of-state, or cyclically at the
update rate specified. Optionally, the data can be inverted on a port-by-port
basis, before being sent via i2o by selecting “Yes” for Invert Sent Data.
IMPORTANT: This module is designed to function as a Modbus TCP/IP
slave/server. Normally, Modbus servers are not allowed to initiate messages
on their own and may only respond to client/master requests. The i2o
functionality of this module is a special application that may cause confusion
for some master/client devices linked to the same network. Other master
devices should be restricted from attempting to control i2o target devices.
These models have three ports of 4 digital I/O channels. Port 0 refers to
digital I/O channels 0, 1, 2, and 3. Port 1 refers to digital I/O channels 4, 5,
6, and 7. Port 2 refers to digital I/O channels 8, 9, 10, and 11. Each input
port of a 983EN may be mapped to the corresponding output port of another
982EN (or 983EN). Optionally, you can invert the input state data sent to an
output port. The digital inputs may be written cyclically, or upon change of
state. However, if you select change-of-state, you will still need to specify a
cyclic update rate in order to keep the communication socket open and
prevent a timeout if your change of state transitions happen to occur at
intervals greater than 90 seconds apart. If you select a time of 0 with
change-of-state enabled, a default value of 30 seconds will be used to
ensure the connection remains open. You may want to make the update
time longer to conserve network bandwidth while still preventing a timeout. If
you disable change of state, then your output control messages will occur at
every interval of your update time (a time of 0 disables cyclical messaging).
Note that the digital inputs only map externally and always control the exact
same channels of target modules (port-to-port), but individual ports may map
to output ports of different modules (at different IP addresses).
WEB BROWSER
I/O Mapping Page
(Optional i2o Function)
Note: the i2o mapping feature
may only be configured via the
built-in web browser page as
there are no Modbus registers
for specifying these
parameters.
This messaging function works
best if the target module(s) are
already online and ready to
receive messages. It will still
work if the target output
modules come online after the
input module, but may take
several minutes to “discover”
all the network targets and
begin transmitting to them.
If the input module or the
target module(s) go offline,
remote messaging will resume
on its own when the
connection is re-established,
but this “healing” function may
take several minutes
depending on which device(s)
went offline, why, and for how
long.

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Each input port of this device may be mapped to the same port of another
Acromag 982/983EN-4012 digital I/O module (different IP address).
Subsequent messages will be sent at a periodic rate specified via the update
time. Note that the target output port channels may still be controlled
independently, but their state will be overwritten by subsequent mapped
messages when enabled. It is recommended that you do not control the
mapped output ports directly.
Change-of-State: Set ON to enable output updates on change of input
state, and OFF to update cyclically. With change-of-state enabled, you will
still have to specify an update time less than or equal to 90 seconds in order
to keep the communication socket open and prevent a timeout of the
connection. If you select 0 seconds with change-of-state enabled, a default
value of 30 seconds will be used to ensure the connection remains open.
Invert Sent Data: Select “Yes” to invert the port data before sending it to
the destination port. Select “No” to send the actual states of the port
channels.
Update Time: Specify a time from 0-90 seconds between messages.
Specify 0 to turn i2o messaging OFF (cyclical). If change-of-state is set to
ON, a default time of 30 seconds will be used to keep the connection open.
Map To IP Address: This is the Static IP Address of the target output
device (another 982/983EN module on the network). Each digital input port
may be mapped to the same port at one IP address.
Note that if you perform the procedure for restoring a module to its original
configuration as outlined in the “Getting Out Of Trouble” section of this
manual, all of the mapping variables are returned to their default values and
mapping may have to be reconfigured.
After completing the username and password assignment, plus the network
configuration parameters and optional I/O mapping assignments, you can
use the Test Page to operate your module and read inputs, turn outputs on
and off, set tag names, configure the watchdog timer, and set watchdog
timeout states.
WEB BROWSER
I/O Mapping Page
(Optional i2o Function)
Test Page

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Use the scroll bar on the right to scroll down the page as shown below:
Note that the 12 channels of this module are divided into 3 groups (ports) of
4 channels each. Each port represents one pluggable I/O terminal block (6
screws). Port Number 0 refers to I/O channels 0-3, port number 1 refers to
channels 4-7, and port number 3 to channels 8-11. The state of a channel is
indicated by the color of the simulated LED’s and the text “ON” or “OFF”.
These states also reflect the actual yellow I/O status LED’s of the module.
Tag names can be up to 9 characters.
IMPORTANT: The input state indication only reflects the state of the inputs
at the moment this screen is invoked and this does not continuously update.
You can click your browser’s refresh button to get a new input update. The
output states are updated each time you click the channel’s On/Off button.
You can use the On/Off buttons adjacent to the channel number to turn the
outputs of 982EN and 983EN modules ON or OFF. The output state
indication is updated each time you click On/Off.
A watchdog timeout is triggered at the port if no channel read or write occurs
for one or more channels of a port within the time period specified. You can
use the Port watchdog Timer Control to specify Time from 0001H to FFFEH
seconds (1 to 65534s). A Time value of 0000H or FFFFH (0 or 65535) will
disable the timer for the port I/O. You can also define the state the outputs
are to assume following a timeout via the lower 4 bits of the 16-bit value
entered into the State field for the port. Enter FFFFH into the State field to
leave the port outputs unchanged following a timeout. Note that the lower
order bit (bit 0) corresponds to the lowest channel number for the port, bit 1
to the next channel number, and so on. Except for FFFFH, the first three
hexadecimal digits of State are ignored (each port has only 4 channels and
the least significant nibble (4-bits) of the State value are all that’s required for
control. For example, Enter a state value of “0000” to turn OFF (open) all
port outputs (failsafe state) upon watchdog timeout. You would enter “000F”
to turn all port outputs ON upon watchdog timeout.
WEB BROWSER
Test Page
TIP: Viewing a module’s web
page is treated similar to
viewing a web page on the
internet. The first time you
open a page, its image is
stored as a temporary internet
file in PC memory. However,
each subsequent attempt to
view that page will need to
automatically update that
image, especially when
making configuration changes.
With Internet Explorer, click
the “Internet Options” of the
“Tools” menu, select the
“General” tab, locate the
“Temporary Internet Files”
information and click on the
“Settings” button. Then select
“Automatically” under “Check
for newer versions of stored
pages:”. Then click [OK] to
return to the “General” screen,
and click [OK] again to save
your settings.

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Upon power-up, the green “Run” LED should light. This indicates the unit is
operating normally. A continuous blinking Run LED indicates “wink” ID
mode. If the Run LED remains OFF and correct power has been applied,
then either the internal power supply has failed or a fatal processor error
(firmware) has occurred.
SYMPTOM
POSSIBLE CAUSE
POSSIBLE FIX
Green RUN LED
does not light.
Internal +3.3V power
has failed.
Return module for repair.
Continuous flashing
green RUN LED.
Module in “wink”
mode.
Read Module Status register
to verify “wink” status. Write
5555H to Wink Mode
Toggle Register to toggle
wink mode off/on.
Cannot
communicate.
Power ON at the
module?
Check power. Is green
RUN LED ON?
Connecting cable is
not a crossover
cable.
TIP: To check cable,
hold both ends in
same position and
read the wire colors
through the clear
portion of the plug
from left to right. If
colors are arranged in
the same order, you
have a straight cable.
This module’s ethernet port
is wired MDI. You must use
a crossover cable when
connecting this module to
your PC or another device
also wired MDI. If you are
connecting to an Ethernet
switch or hub, then a direct
cable is used.
Note: If your Link LED is
ON, you have connected
using the correct type of
cable, but it could still be
defective.
Wrong IP Address
Change the IP address of
the module or the PC so
that both match. Try the
default module address of
128.1.1.100.
Many
Communication
Errors.
Is cable segment
longer than 100M?
Max distance between two
nodes is limited to 100
meters with approved cable.
Correct Cable?
Shielded CAT-5/5E cable or
equivalent is recommended.
Missing earth ground
connection.
Connect earth ground to
TB3-33 GND terminal
adjacent to power terminal.
Outputs Not
Working.
Missing excitation
connection?
Connect an excitation
supply between the port
EXC and RTN terminals
Missing pull-up
resistors?
Install SIP resistor in socket
of board for port of interest,
or pullup outputs externally.
Cannot Browse
Module.
Your browser may be
setup to use a proxy
server for LAN
communications.
Temporarily disable the use
of a proxy server by your
browser (see procedure of
next page).
TROUBLE-
SHOOTING
Diagnostics Table
If your problem still exists after
checking your wiring and
reviewing this information, or if
other evidence points to
another problem with the unit,
an effective and convenient
fault diagnosis method is to
exchange the module with a
known good unit. Acromag’s
Application Engineers can
provide further technical
assistance if required.
Complete repair services are
also available from Acromag.

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18
Please refer Acromag Application Note 8500-734 for help in setting up
network communication with your module (located on the CDROM shipped
with your module or via download from our web site at www.acromag.com).
This document gives details for changing your PC’s TCP/IP configuration in
order to communicate with your module (see TCP/IP Properties of Network
Configuration in Windows).
If you have carefully followed this procedure and you still cannot browse your
module, you may have the web browser of your laptop or PC setup to use a
proxy server when browsing the web. If you are using Internet Explorer,
Refer to the “Tools” pulldown menu, select “Internet options…”, click the
“Connections” tab, then click the “LAN Settings” button. Locate the Proxy
server information and uncheck the box next to the statement “Use a proxy
server for your LAN”. Then click [OK] to return to the “Connections” screen,
and click [OK] again to save your settings.
You should now be able to use Internet Explorer to browse the module as
required. However, to later restore your PC’s connection to your company
network, you may have to re-enable the use of a proxy server for your LAN.
There is no built-in error detection to prevent you from writing invalid values
to a configuration register. As such, if you inadvertently write an invalid value
to an internal register, you could cause the module to become inoperable
under certain conditions. If this happens, in order to regain control of the
module, the module can either be re-downloaded at the factory, or you can
try restoring the module to its initial configuration by following this procedure:
Procedure For Restoring any 9xxEN Module to its Initial Configuration
1. While module power is OFF, press and hold the front-panel toggle
switch in the default (DFT left) position.
2. While continuing to hold the toggle switch in the default position, apply
power to the module.
3. After a few seconds, the Status LED will begin to blink quickly and you
can release the default switch at this point. The module will continue to
boot itself as it normally does. That is, the green RUN LED will blink for
1-10 seconds as the unit acquires its address, then remain ON for
normal operation.
4. If the STATUS LED fails to blink rapidly after a few seconds and the
RUN LED just blinks for a few moments as it normally does, then
reinitializing the module has failed and you should try it again. This
time, make sure that the DFT switch is completely depressed and held
while powering the unit. Also make sure that you are pressing the DFT
toggle in the DFT direction (left), rather than the RST direction (right).
Note that if you perform the procedure for restoring a module to its original
configuration as outlined above, all of the I/O mapping variables are returned
to their default values and I/O mapping may have to be reconfigured.
TROUBLE-
SHOOTING
Trouble Browsing Your
Module?
Getting Out Of Trouble
So, your module’s “gone wild”,
follow this procedure to restore
it to its initial configuration and
regain control.

BusWorks® 981/982/983EN Module User’s Manual Modbus TCP/IP Digital I/O
___________________________________________________________________
Acromag, Inc. Tel:[phone] Fax:[phone] Email:[email protected] ttp://www.acromag.com
19
TECHNICAL REFERENCE
•Safety Agency Approvals –CE, UL, & cUL listed, plus Class I; Division
2; Groups A, B, C, D approval.
•Fully Isolated –I/O channels, network, and power are all isolated from
each other for safety and increased noise immunity.
•Modbus TCP/IP Protocol Support –Supports up to 10 sockets/
masters using port number 502 (Modbus TCP/IP Default).
•I/O Mapping (i2o) Feature –Allows the inputs of a 983EN device to
control the outputs of an Acromag 982EN or 983EN output module.
•Flexible IP Addressing –Supports static, DHCP, or BOOTP.
•Built-In Web Pages - Allow unit to optionally be configured, controlled,
and monitored via access with a standard web browser over ethernet.
•Convenient “Wink” ID Mode Support –Blinks green RUN LED in wink
mode as a tool to help identify specific remote units.
•Fully Independent w/ Direct I/O Connection –Self-contained with no
special bus couplers, power supply, or rack mount required to operate.
•Network Port is Transient Protected –Shielded RJ45 port includes
transient protection from ESD, EFT, and other transients.
•10Base-T and 100Base-TX Support –Auto-negotiated 10/100Mbps,
Half or Full Duplex.
•Plug-In Terminal Blocks & DIN-Rail Mount - Make mounting, removal,
and replacement easy.
•Flexible Discrete Inputs & Outputs - High voltage/current open-drain
outputs provide direct (low-side) control of external devices. Buffered
inputs allow outputs to be read back, or input levels to be monitored.
•Tandem Input/Output Circuitry (983EN Only) - Input buffers are
connected in tandem with open-drain outputs for convenient loop-back
monitoring of the output state.
•Convenient Pullup Resistors Mounted In Sockets –SIP resistors are
installed in sockets on the I/O board and provide input and output pull-
ups to the excitation supply. These SIP resistors can be removed or
exchanged according to your application.
•Outputs Have Built-in Protection –Over-temperature/current shut-
down protection is built-in and include active clamping circuitry for
switching inductive loads.
•Failsafe Mode Support w/Watchdog Time Control –Outputs can be
sent to a failsafe state if the host fails and a watchdog timeout occurs.
•Nonvolatile Reprogrammable Memory –Allows the functionality of this
device to be reliably reprogrammed thousands of times.
•Operation/Diagnostic LED Indicators Aide Troubleshooting –12
yellow LED’s indicate active-low I/O state. Yellow ACT LED indicates
port activity (busy). Green LNK LED indicates link (auto-negotiation
complete and connection established). Green RUN LED indicates
power or blinks in wink ID mode. Yellow ST LED indicates default
communication mode (slow flash) and timeout status (fast flash).
•Internal Watchdog - A hardware watchdog timer is built into the
microcontroller that causes it to initiate a self reset if the controller ever
“locks up” or fails to return from an operation in a timely manner.
•Wide-Range DC-Power –Wide range diode-coupled for use with
redundant supplies, and/or battery back-up.
•Hardened For Harsh Environments - For protection from RFI, EMI,
ESD, EFT, & surges. Has low radiated emissions per CE requirements.
•Wide Ambient Operation –Reliable over a wide temperature range.
KEY FEATURES