
Advant Controller 31 / Issued: 07.99
13 Hardware 07 KP 93 R1161
8 .3
07 MK 62
NCC485 NCC485
Advant Controller 31
ABB Procon-
tic T200
MODBUS
RS–232
07 KT 93
07 KT 92
07 KR 91 R353
MODBUS RS–485
07 KT 94
07 KP 93
07 KT 94
07 KT 94
07 KT 94
07 AC 91
07 AC 91
NCC485
1.7 MODBUS-RTU
Overview
Brief description, field of application
MODBUS-RTU is an international widely known standard.
The main application is the coupling in the local area for:
• Automation systems and PLCs,
• Operating terminals
• PC operating stations / master terminals
Short data
• Number of user stations with EIA RS-485: 32
Distance with EIA RS-485: max. 1.2 km
• Connection of dedicated-line modems is possible
Networking alternatives
Multi-point line up to 1.2 km
Coupler
With Advant Controller 31 as
well as with ABB Procontic
T200, the MODBUS master
can be located at any position
on the bus line.
CS31
system bus
CS31
system bus
I/O modules
I/O modules
Fig. 14
EIA RS-485, 2-wire, max. 1.2 km
alternatively
AC31
series 50
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