Compobus/S Remote I/O Communications; Master Word Allocations - Omron E3X-DRT21 Operation Manual

CompoBus/S Remote I/O Communications

3-5 CompoBus/S Remote I/O Communications
3-5-1

Master Word Allocations

Pin 1 OFF (Six
Sensors Max.)
Pin 1 ON (14 Sensors
Max.)
The E3X-SRT21 data is stored in the IN Slave Area of the CompoBus/S mas-
ter. Select the data by setting pin 1 of the DIP switch as shown in the following
table.
Pin 1 Maximum number of Sensors Connected Number of allocated nodes
OFF 6
ON 14
Note Fiber Amplifier Units (E3X-DA6TW and E3X-DA8TW) that are allocated two
unit numbers must be counted as two Units when counting the number of con-
nected Sensors.
Up to six Sensors can be connected in this mode. The Sensors are allocated
8 bits of data as the IN Area, which functions as the area for the designated
node address as follows:
Bit
00 Unit 1 ON/OFF data
01 Unit 2 ON/OFF data
02 Unit 3 ON/OFF data
03 Unit 4 ON/OFF data
04 Unit 5 ON/OFF data
05 Unit 6 ON/OFF data
06 Sensor Communications Error Flag
07 Sensor Communications Flag
Sensor Communications Error Flag
Bit 06 turns ON when the number of Sensors registered as connected does
not match the number of Sensors able to communicate, or when a communi-
cations error occurs after communications have been established with the
Sensors.
Sensor Communications Flag
Bit 07 turns ON when communications are established with the Sensors.
Up to 14 Sensors can be connected in this mode. The Sensors are allocated
16 bits of data as the IN Area, as follows:
Node
address
setting
Odd number From the designated node address –1 to the set node address
Even number From the designated node address to the designated node address +1
Contents
Node address used
Section 3-5
One node in IN Area
Two nodes in IN Area
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