Using Compobus/S Remote I/O Communications: Example - Omron E3X-DRT21 Operation Manual

Overview of CompoBus/S Communications Model
Communications
method
Remote I/O com- Up to 6 Sensors
munications (func-
tions as
CompoBus/S
slave)
Up to 14 Sensors High-speed
3-1-3

Using CompoBus/S Remote I/O Communications: Example

Communications mode
High-speed
communications
Long-distance
communications
communications
Long-distance
communications
The following example is for monitoring the ON/OFF output status of Fiber
Amplifier Unit number 1, with DIP switch pin 1 OFF, E3X-SRT21 CompoBus/S
node address 00, and CompoBus/S Master Unit Special I/O Unit number 0.
The IN Area starts at CIO 2000 and runs through the rightmost byte (bits 00 to
07) of CIO 2004 (word n + 4) in the IN Area. The eight bits of the Communica-
tion Unit slave 00 are allocated bits 00 to 07 of CIO 2004.
Reflected in
IN Area
E3X-SRT21
node address 00
IN Area (When Special I/O Unit unit number of CompoBus/S Master Unit is 0)
Bits
15 14
CIO 2004
Allocated Communications data
words
One node Sends following data to master:
in IN Area
ON/OFF output signals for up to 6
Sensors
Two nodes Sends following data to master:
in IN Area
ON/OFF output signals for up to 14
Sensors
C200HW-SRM21-V1 CompoBus/S Unit
remote I/O communications
CS1 CPU Unit
IN Area
CompoBus/S
13 12 11 10 09 08 07 06
Node address 00
Section 3-1
6 max.
14 max.
Fiber Sensors
Unit 1 for which
ON/OFF data is
being monitored.
05 04 03 02 01 00
Sensor ON/OFF
output status for
Unit 1
Number of
Sensors
55