Appendix BSpecifications
157
Connectable B7A Link Terminals
Input Terminals
Type Model Transmission delay
Screw terminals
B7A-T6j1
Standard (19.2 ms)
B7AS-T6j1
B7A-T6j6
High-speed (3 ms)
B7AS-T6j6
Modular
B7A-T6D2 Standard (19.2 ms)
B7A-T6D7 High-speed (3 ms)
PC connectors
B7A-TjE3
Standard (19.2 ms)
B7A-TjE8
High-speed (3 ms)
Output Terminals
Type Model Transmission delay
Screw terminals
B7A-R6jj1
Standard (19.2 ms)
B7AS-R6jj1
B7A-R6jj6
High-speed (3 ms)
B7AS-R6jj6
Modular
B7A-R6A52 Standard (19.2 ms)
B7A-R6A57 High-speed (3 ms)
PC connectors
B7A-RjAj3
Standard (19.2 ms)
B7A-RjAj8
High-speed (3 ms)
Note 1. Do not connect Terminals with different transmission delays to the same Interface Unit. Doing so will
cause a transmission error.
2. 10-point B7A Link Terminals and Mixed I/O (8 inputs/8 outputs) B7A Link Terminals cannot be con-
nected to a B7A Interface Unit. 16-point B7A Link Terminals, 32-point B7A Link Terminals with a two-cir-
cuit configuration, and Mixed I/O B7A Link Terminals with a 16-point input/output configuration can be
connected.
Comparison between Standard and Group-2 B7A Interface Units
Type Models CPU Unit Word allocations
Connectable B7A Link Terminals
Transmission
delay
Transmission
errors
Points (see note
2)
Standard
C200H-B7AI1
Any C200H Same as I/O Standard Input status 16-point
C200H-B7AO2
CPU Unit Units (in order
mounted).
types only
(19.2 ms)
held
automatically
Terminals only
(10-point,
Group-2
C200H-B7A12
C200H-CPU21-
E/22-E/23-E/
Words 030 to 049
allocated
Standard
(19.2 ms) and
Switch setting
to hold or
32-point, and
mixed I/O
C200H-B7A02
E/22-E/23-E/
31-E CPU Unit
only
allocated
according to I/O
number setting
(19.2 ms) and
high-speed
(3 ms) types
to hold or
reset Input
status.
Terminals cannot
be connected.
C200H-B7A21
only number setting
(see note 3)
(same as Group-2
(3 ms) types
(set via
switch)
status.
C200H-B7A22
High-density I/O
Units)
Note 1. Mount the B7A Interface Unit (C200H-B7AO1) to the C200H-BCjj1-V1 or C200H-BCjj1-V2 Back-
plane.
2. 10-point B7A Link Terminals and Mixed I/O B7A Link Terminals with an 8 input-8 output configuration
cannot be connected to a B7A Interface Unit. 16-point B7A Link Terminals, 32-point B7A Link Terminals
with a two-circuit configuration, and Mixed I/O B7A Link Terminals with a 16-point input or output config-
uration can be connected.
3. Words IR 030 to IR 049 (Group-2 High-density I/O Unit and B7A Interface Unit Area) are allocated to the
inputs/outputs of Group-2 B7A Interface Units according to the setting of the I/O number switch on the
front of the Unit, in the way shown in the following table (for Mixed I/O Units, words are allocated in the
order output → input for each Unit).
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