ICP DAS Co., LTD
PM-3133i Quick Start V1.00
Page 8
3.
Communication
3.1.
RS-485 & CAN setting
Default setting for RS-485:
19200, n, 8, 1
,
for CAN:
125K bps
DIP switch (SW1-SW6) is used for Modbus address(or
CANopen Node ID) setting, default is 1, i.e. all OFF
For example:
Modbus address(or CANopen Node ID) is 10
，
find the table of DIP switch 1-6 is
ON, OFF, OFF, ON, OFF, OFF
SW1
－
SW6 setting
Setting Modbus-RTU address for communication (1-64)
Modbus Address
SW 1
SW 2
SW 3
SW 4
SW 5
SW 6
1
OFF
OFF
OFF
OFF
OFF
OFF
2
ON
OFF
OFF
OFF
OFF
OFF
3
OFF
ON
OFF
OFF
OFF
OFF
4
ON
ON
OFF
OFF
OFF
OFF
5
OFF
OFF
ON
OFF
OFF
OFF
6
ON
OFF
ON
OFF
OFF
OFF
7
OFF
ON
ON
OFF
OFF
OFF
8
ON
ON
ON
OFF
OFF
OFF
9
OFF
OFF
OFF
ON
OFF
OFF
10
ON
OFF
OFF
ON
OFF
OFF
SW7
－
SW8 For Baud Rate Setting
RS-485
CAN
SW 7
SW8
9600 bps
125k(Default)
OFF
OFF
19200 (Default)
250k bps
ON
OFF
38400 bps
500k bps
OFF
ON
115200 bps
1M bps
ON
ON
PM-3133i
：
Select the different wiring mode
(Please select the Software setting, if 1P2W-1CT or 1P3W-2CT is used)
Models
PM-3133i
PM-3133i-MTCP
Wiring
SW 9
SW 10
SW 1
SW 2
Software setting
OFF
OFF
OFF
OFF
3P3W-2CT
ON
OFF
ON
OFF
3P3W-3CT
OFF
ON
OFF
ON
3P4W-3CT
ON
ON
ON
ON
3.2. Add the Bias Resistor on RS-485 Network for stable signal
The RS-485 master is required to provide the bias for PM-31xx series.
Otherwise, the tM-SG4 or SG-785 should be added to provide the bias. All
ICP DAS controllers and converters provide the bias.
