Omron EJ1 User Manual page 185

Connecting More Than One HFU
MELSEC
Q/QnA/QnAS-series PLC
RS-422
Signal
SDA
SDB
RDA
R
RDB
FG
160
Shield
2. Make the PLC settings.
Refer to Make the PLC settings. on page 123
3. Make the EJ1 settings.
Make the following setting in all HFUs that are connected.
Variable type
F0/B0 Port C Send Wait Time
Programless Communications Protocol
Programless Communications Maximum
Unit Number (See note.)
Note If three HFUs are connected, set the maximum unit number to 2.
EJ1N-HFU@-NFL2
B1
A1
B2
A2
B3
A3
B4
A4
B5
A5
B6
A6
RDB(+)
B7
SDB(+)
A7
RDA( )
RS-422
B8
A8
SDA( )
B9
A9
Parameter name
Section 5-2
EJ1N-HFU@-NFL2
B1
A1
B2
A2
B3
A3
B4
A4
B5
A5
B6
A6
RDB(+)
B7
SDB(+)
A7
RDA( )
RS-422
B8
A8
SDA( )
B9
R
A9
Setting/Monitor values
1: 1 ms
5: MC protocol (format 5)
Set the unit number to
one less than the number
of HFU units that are
connected.