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Installation Guide IGC2330BR02
Revision 2
Input/Outputs
All M3 RTU’s have 12 Input/Output Points (IOP configurable
in software as analogue or digital, inputs or outputs.
(See the table above for a matrix of available functions on
each I/O Point.)
As a Digital Input (IO Points 1 to 12)
Type
Current Sink (Switch to +V to operate)
Input Impedance 5 kOhms nominal.
Input OFF
Condition
Input < 2Vdc
Input ON
Condition
Input > 3Vdc
Functions
Software selectable as:
ON/OFF Input
Counter Input (counts rising edge
pulses)
Hours Input (counts hours while input
is on to resolution of 0.01 hours).
As a Digital Output (IO Points 1 to 10)
Type
Voltage Source (Solid State Switch to
+V)
ON State
Rated Current
< 100mA continuous maximum per
output
< 200mA peak (<10ms) max, per
output
< 500mA total for all outputs
simultaneously
ON State Volt
Drop
< 3V at maximum rated load
OFF State Rated
Leakage Current
< 0.1mA at maximum supply voltage
Functions
Software selectable as:
ON/OFF
ON Pulse (configurable 10ms
–
300s)
OFF Pulse ( configurable 10ms =
300s)
As an Analogue Input (I/O Points 1,2, 11, 12)
Type
Voltage Input referenced to 0V
supply.
Range
0-30Vdc (software configurable to
smaller ranges such as 1-5Volts)
Accuracy
< 0.15% of r6mV from 0 to
5.5V
< 0.15% of r30mV from 5.5 to
30V
Resolution
6mV from 0 to 5.5 Volts nominal (10
bits)
33mV from 5.5 to 30Volts nominal
(10 bits)
As an Analogue Input (I/O Points 3 to 10)
Type
Voltage Input referenced to 0V
supply.
Range
0-5.5Vdc (software configurable to
smaller ranges such as 1-5Volts)
Accuracy
< 0.25% of r6mV
Resolution
6mV nominal (10 bits)
Serial Port
Type
Asynchronous serial port
Protocols
Supports the following
protocols as standard:
•
Conet/s
•
Modbus ASCII (Master or
Slave)
•
Modbus RTU (Master or
Slave).
Baud Rate
300
–
38,400 baud.
Maximum cable
length
15 meters (50ft) in RS232 mode
1200m (4000ft) in RS485
mode*
Connection
9 pin sub-miniature DB9 (male).
RS232/422/485
Selected by the wiring to the
DB9 connector
Pin
Communication Standard
RS232
RS485*
1 Do not connect Rx Data + (In)
2
Rx Data (In)
Rx Data
–
(In)
3
Tx Data (Out) Do not connect
4 Do not connect Tx Data+ (Out)
5
Ground
Ground
6 Do not connect
Vcc
7
RTS (Out)
Do not connect
8
CTS (In)
Do not connect
9 Do not connect Tx Data
–
(Out)
* Tx+ and Rx+ (pins 1 and 4) need to be connected
together as do Tx- and Rx (pins 2 and 9) when using
RS485 2-wire.
1
3
4
5
6
7
8
9
2
