Installation & Start-Up | 3-15
• Current Input
On the analog board nd Header J2, place jumpers between Pins 3 and 5,
and between Pins 4 and 6. See the following gure. Connect the positive (+)
input to the Current Input + terminal, and the negative (-) input to the Current
Input – terminal.
Current input range is 4-20 mA. Input resistance between Pins 4 and
5 is 100 Ohms.
RS-485 Communication Connection
The RS-485 communication port is used specically with Modbus-RTU that is
used to communicate with DSC or a Modbus master computer.
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