99
Programless Communications
Section 5-6
• RS-232C
• RS-422
• Refer to the user’s manual if using a Communications Module for the
QnAS Series.
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
EJ1G-HFU
MELSEC-Q/QnAS Series
RS-232C
Turn ON pin 8 of SW2
to set RS-232C.
SD
RD
SG
RS-232C
CD
Signal
1
Pin
No.
RD
SD
SG
RS
CS
2
3
5
7
8
DTR
4
DSR
6
Shield
RS-422
RDB(+)
RDA(
−
)
EJ1G-HFU
SDA
−
SDB+
RDA
−
RDB+
Signal
FG
MELSEC-Q/QnAS Series
RS-422
Shield
SDB(+)
SDA(
−
)
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
SDA
SDB
RDA
RDB
Signal
FG
R
R
Summary of Contents for EJ1G
Page 3: ...iv ...
Page 17: ...xviii ...
Page 21: ...xxii ...
Page 53: ...32 Unit Configuration Examples Section 2 4 ...
Page 69: ...48 Changing SPs During Operation Section 3 3 ...
Page 81: ...60 Other Functions Section 4 5 ...
Page 145: ...124 Other HFU Functions Section 5 7 ...
Page 167: ...146 Detailed Description of Services Section 6 4 ...
Page 229: ...208 Parameters That Can Be Allocated for Programless Communications Appendix ...
Page 237: ......