Delta Electronics Communication Module RTU-485 - Manual (Page 7)

Modbus Remote I/O Communication Module RTU-485
DVP-PLC Application Manual 5
2.4 Address Switch
The switch is used on setting up the communication address of RTU-485. Range: H’01 ~ H’F0 (decimal: 1 ~
240)
Switch setting Content
H’01 ~ H’F0
Valid communication address
ID0 ~ ID7 are defined as: 2
0
, 2
1
, 2
2
, …2
6
, 2
7
H’00,
H’F1 ~ H’FF
Invalid communication address
Example: If you need to set the address of RTU-485 to 26, swich the DIP switch corresponding to ID4 to “ON”,
switch corresponding to ID3 to “ON” and switch corresponding to ID1 to “ON”.
Note:
z Please set up the address when the power of RTU-485 is switched off. After the setup is completed, re-power
RTU-485.
z When RTU-485 is operating, changing the setting of communication address will be invalid.
z Use slotted screwdriver to adjust the switch carefully in case you scratch the switch.
2.5 Communication Mode Switch
These switches are for:
z Setting up communication format (PA0 ~ PA3, A/R)
z Setting up baud rate (DR0 ~ DR2)
PA3 PA2 PA1 PA0 A/R Format
OFF OFF OFF OFF ON 7,E,1, ASCII
OFF OFF OFF ON ON 7,O,1, ASCII
OFF OFF ON OFF ON 7,E,2, ASCII
OFF OFF ON ON ON 7,O,2, ASCII
OFF ON OFF OFF ON 7,N,2, ASCII
OFF ON OFF ON ON 8,E,1, ASCII
OFF ON ON OFF ON 8,O,1, ASCII
OFF ON ON ON ON 8,N,1, ASCII
PA3 PA2 PA1 PA0 A/R Format
ON OFF OFF OFF ON 8,N,2, ASCII
OFF ON OFF ON OFF 8,E,1, RTU
OFF ON ON OFF OFF 8,O,1, RTU
OFF ON ON ON OFF 8,N,1, RTU
ON OFF OFF OFF OFF 8,N,2, RTU
DR2 DR1 DR0 Baud rate (bps)
OFF OFF OFF 1,200
OFF OFF ON 2,400
OFF ON OFF 4,800
OFF ON ON 9,600
ON OFF OFF 19,200