Appendix BSpecifications
195
Connectable B7A Link Terminals
Only 16-point B7A Link Terminals can be connected to a B7A Interface Unit. These are listed in the following
tables.
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. B7A Link Terminals with 10-points and B7A Link Terminals with mixed I/O (8 inputs/8 outputs) cannot be
connected to B7A Interface Units. Use 16-point B7A Link Terminals. 16-point B7A Link Terminals
include 16-point (input or output) models, models with 2 circuits configured with 16 points, and models
with 16 points of mixed I/O.
Comparison between Standard and Group-2 B7A Interface Units
Type Models Word allocations
Connectable B7A Link Terminals
Transmission
delay
Transmission
errors
Points
Standard
C200H-B7AI1
Same as I/O Units (in order
Standard
Input status
16-point
C200H-B7AO2
moun
e
.
ypes on
y
(19.2 ms)
e
automatically
erm
na
s on
y
(10-point,
Group-2
C200H-B7A12
Words 030 to 049 allocated
according to I/O number setting
Standard
Switch setting
32–point, and
mixed I/O
C200H-B7A02
according to I
number setting
(same as Group-2 High-density I/O
19.2 ms
and
high-speed
to hold or
reset Input
Terminals cannot
C200H-B7A21
Units; see note below)
(3 ms) types
status.
e connec
e
.
C200H-B7A22
switch)
Note In the case of Group-2 B7A Interface Units, words 030 to 049 (Group-2 High-density I/O Unit and B7A Inter-
face Unit Area) are allocated according to the setting of the I/O number setting switch on the front of the Unit
as shown in the following table. For mixed I/O Units, words are allocated in in the order output → input.