3
Figure 1-2. Installating RS485 Option Card to SV-iH
3.2.
Status LED
CPU LED
Normal operation of the board
RXD LED
Receiving 485 signal
TXD LED
Responding to 485 signal
Intermittent blinking
Wrong data received (normal)
Blingking with CPU LED
coincidentally
DPRAM Communication Error
ERR LED
Blinking after CPU LED blinks
Network Connection TimeOut
Connect CN1to CNC7
iH Control Board
ㅊ
RS485 Board
CP
U
TX
RX
ERR
CN1
U1
U4
U3
X1
S
G
T2
T1
N
P
CNC3
G5
BC5
U6
U7
U8
R
6
CNC7
U4
BC4
B7
iH
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