I472 GB I 01 19
31100284
G
B
15
3.5 MODBUS CONNECTION
3.5.1 Connection
plan
Wiring example: Modbus network
3.5.2 Terminal data
Terminal description Modbus
Connection X216
Connection type Spring terminal
Min. cable cross-section mm
2
0.5
Max. cable cross-section mm
2
1.5
Stripping length mm 10
Tightening torque Nm ––
Required screwdriver 0.4x2.5
3.5.3 Basic network settings
The network must be terminated with a 120
Ω
resistor at the physically first and last node.
Set the “R” switch to ON at these nodes.
Use the DIP switch to set node address and baud rate and to activate the integrated bus terminating resistor.
i
Bus termination Baud rate Parity Modbus node address
R c b a 128 64 32 16 8 4 2 1
OFF n.c. OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
Inactive Automatic detection Automatic detection Value from parameter
ON ON ON Node address - example:
Active Value from parameter Value from parameter OFF OFF OFF ON OFF ON ON ON
Node address = 16 + 4 + 2 + 1 = 23
Node address > 247: value from parameter
Printed in bold
= Factory setting
