
第
10
页
eight external alarm interface
(1) alarm input 1,2,3,4
(2) ground (3) RS232 (4) RS485 (5) alarm input 5,6,7,8
(6) ground (7) alarm output
sixteen external alarm interface
①⑥⑧
alarm input
②⑦
ground
③
alarm output
⑤
RS485
④
RS232
Parameter
meaning
G
grounding
R,T
RS232 port
A,B
485communciate interface which is connected with the
recording control equipments such as the decoder