UMPIOXR400V2-7-1EN, 2012-07-01
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6 Installation of PIOX R400, R400B, R400C, R400A2
6.8 Connection of the Serial Interface
6.8.1 Transmitter PIOX TR374, TR374B, TR374C, TR374A2
RS232 interface
The RS232 interface is located on the front plate of transmitter (see Fig. 6.16). The RS232 interface can be
connected only outside of an explosive atmosphere as the housing has to be opened.
RS485 interface (optional)
•
Connect the RS485 cable to the terminals A+ and B- and the shield to terminal 101 of terminal strip KL4 (see
Fig. 6.16).
Fig. 6.16: Connections of the serial interfaces of the transmitter
6.8.2 Transmitter PIOX TR379
RS485 interface (optional)
•
Connect the RS485 cable to the terminals 4A+ and 4B- of terminal strip KL 4 of transmitter PIOX TR379.
Attention!
Always observe the "Safety Instructions according to Directive 94/9/EC" (see document
SIPIOX_R400).
Note!
If the transmitter has an RS485 interface, no data can be sent via RS232.
F 1
K L 3
10
1
A
+
B
-
connection of RS232 interface
connection of RS485 interface:
