Figure 6-8 Shield connection and shield terminal
6.4 Connection of RS485 serial interface
Devices can be connected to the serial interface RS485 in accordance with the information in
section Technical data (Page 115).
Table 6-2 Termination of RS485 serial interface
Labeling Function Connection pin
RS485: T+ RS485 termination +:
Is used at the physical end of the bus for inserting termi‐
nation jumpers
9
RS485: T- RS485 termination -:
Is used at the physical end of the bus for inserting termi‐
nation jumpers
10
RS485: D+' RS485 data line +':
Is used at the physical end of the bus for inserting termi‐
nation jumpers and in between for looping through the
bus cables
11
RS485: D-' RS485 data line -':
Is used at the physical end of the bus for inserting termi‐
nation jumpers and in between for looping through the
bus cables
12
RS485: D+ RS485 data cable + 13
RS485: D- RS485 data cable - 14
If a SIWAREX WP321 module is connected to SIWATOOL or a Siebert display, insert wire
jumpers between the T+ and D+' terminals and between the T- and D-' terminals.
Connecting
6.4 Connection of RS485 serial interface
SIWAREX WP321
32 Operating Instructions, 08/2019, A5E33715669A-AD
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