Common Specifications; I/O Memory Allocations - Omron CJ1G/H-CPU series Operation Manual

B7A Interface Unit
3-7-5

Common Specifications

3-7-6

I/O Memory Allocations

Item
Applicable PLCs CJ Series
Unit classification CJ-series Basic I/O Unit
Transmission delay Standard (19.2 ms typical) or high-speed (3 ms typical),
switchable
(Switchable by using the setting switch on the front panel.
Settings are read when power is turned ON or Unit is
restarted.)
Factory setting: Standard (19.2 ms typical)
Note A transmission error will occur if B7A Link Terminals
Transmission error HOLD (The bit status from immediately before the transmis-
input status processing sion error is held.)
Settings Front panel
Setting switch: Standard (19.2 ms typical) or
high-speed (3 ms typical), switchable
Indicators 5 LED indicators: RUN (B7A operating status), ERR1 (port
1 communications error), ERR2 (port 2 communications
error), ERR3 (port 3 communications error), ERR4 (port 4
communications error)
Front panel connection Connector with clamps
Current consumption 5 V DC:70 mA max. (supplied from Power Supply Unit)
Weight 80 g max.
The B7A Interface Unit is a Basic I/O Unit. Each Unit is allocated four words in
the I/O Area (which starts at CIO 0000). The words are allocated according to
the mounting position of the Unit as shown in the following table.
Port
CJ1W-B7A14
1 Input
2 Input
3 Input
4 Input
Specifications
with different transmission delay times are con-
nected to each other.
Input/output
CJ1W-B7A04 CJ1W-B7A22
Output Output
Output Output
Output Input
Output Input
Section 3-7
Allocated word
(n: First word
allocated to Unit)
Word n
Word n+1
Word n+2
Word n+3
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