Toshiba GRL100-701B Instruction Manual page 166

3.1.4.3 IO3 and IO4 Modules
The IO3 and IO4 modules are used to increase the number of binary outputs.
The IO3 module incorporates 10 auxiliary relays (BO) for binary outputs. The IO4 module
incorporates 14 auxiliary relays (BO) for binary outputs and 3 photo-coupler circuits (BI). All
auxiliary relays each have one normally open contact.
Binary
input
signals
(× 3)
Figure 3.1.4.3 IO3 Module
Photo-coupler
BI
BI
BI
Figure 3.1.4.4 IO4 Module
 165 
Auxiliary relay
BO
BO
Binary
output
signals
BO
(× 10)
BO
Auxiliary relay
BO
BO
Binary
output
signals
(× 14)
BO
BO
6 F 2 S 0 8 5 0