PLANET ICA-HM830W - Manual (Page 11)

Terminal block for I/O connectors:
Name Pin Function
GND 1
Digital input 4 2
Digital input 3 3
Digital input 2 4
Digital input 1 5
Four sets of Digital Input, DI1 until DI4; the internal device
is also photo-coupled electrical relay. In practi ce, the
external device can be simply an On/Off switch. Four sets
of On/Off switch can b e connected as different trigger
source.
DO_NO 6
DO_COM 7
Digital output implementation; Pin6 to COM (Pin7 ) is a
Photo-coupled relay on Normal Open status. External
device can directly connect to the terminals. However the
current that will go throug h the 2 node s must not exceed
130mA. An external “Relay” can also be connected to the
terminals as an implem entation. In this ca se, current
(or/and voltage) limitation is specifie d by the external
Relay.