2. WIRING
2-25
2.2.7 How to set jumper blocks in the sensor adapters
MC-3020D/3030D
This paragraph shows how to set the MC-DIN Board (24P0116, for MC-3020D) and
MC-DOUT Board (24P0117, for MC-3030D).
Setting MODBUS addresses: Use the rotary switch (U18) to set the MODBUS
address with a digit of number from “0”. When multiple sensor adapters are connected
to the MC-3000S, the same number cannot be used among them. (It is allowed to use
the same number between the MC-3000S and a sensor adapter.)
Setting termination resistors on the Jumper block
Use the jumper block J25 to set the termination resistor on/off for the MODBUS
communication on the connector J1. For the first and last sensor adapter in a series,
their termination resistors should be set to ON. If not, communication between sensor
adapters is not possible.
Jumper block J25 Connector J1
1-2 OPEN Termination resistor: OFF (default setting)
2-3 SHORT
1-2 SHORT Termination resistor: ON
2-3 OPEN
U18
U18
J25
J25
MC-DIN Board (24P0116) MC-OUT Board (24P0117)
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