95
Programless Communications
Section 5-6
• RS-232C
• RS-485
• Attach terminating resistance (110 to 125
Ω
) to pins 6 and 7 on the EDU
port B if there are problems with communications noise resistance.
Note
Refer to Related Manuals on page xiv for the operating methods for SYSMAC
CS/CJ-series CPU Units and Serial Communications Boards/Units.
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
EJ1G-HFU
SD
RD
RS
CS
SG
FG
Signal
2
3
4
5
9
Shell
Pin
No.
SYSMAC
CJ/CS Series
RS-232C
Turn ON pin 8 of SW2
to set RS-232C.
SD
RD
SG
RS-232C
Shield
RS-485
B(+)
A(
−
)
EJ1G-HFU
SYSMAC
CJ/CS Series
RS-485
Shield
Signal
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
1
2
6
8
Shell
Pin
No.
RDA
−
RDB+
SDA
−
SDB+
FG
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: ......