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INSTALLATION
MODBUS CONNECTOR
POWER CONNECTOR
NOTE
2–4
Figure 2-5: Configuration cable (PC end)
The Modbus connector is indicated as C in Figure 2-1: D485 electrical connections on page
2–2. This connector is used to connect the D485 to the serial network. Based on the
configuration selected in the EnerVista P485/D485 Setup software, the corresponding
signals are activated.
Table 2–4: Modbus connector pin assignments
Pin
Description
1
+5 V output (50 mA max)
2
RS232 Rx
3
RS232 Tx
4
Not connected
5
Ground
6
RS422 Rx +
7
RS422 Rx –
8
RS485 + / RS422 Tx+
9
RS485 – / RS422 Tx–
The power connector is indicated as D in Figure 2-1: D485 electrical connections on page
2–2. Use this connector to apply power to the D485.
Pin 1: +24 V DC;
Pin 2: ground
Use 60/75 or 75°C copper (CU) wire only. The terminal tightening torque must be between
5 to 7 lbs-in (0.5 to 0.8 nm).
5
1
9
6
(female)
5
1
9
6
(female)
Figure 2-6: Modbus connector
RS232
RS422
1
2
Figure 2-7: Power connector
D485 MODBUS TO DEVICENET CONVERTER – USER GUIDE
RS485
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