Connector pin layout – Yaskawa MP920 Communications Module User Manual
Page 121
6.2 Part Names
6-5
6
The following table describes the operation of the LED indicators when a failure has
occurred.
Note: The number in parentheses ( ) under “Flashing” indicates the number
of flashes.
Connector Pin Layout
A 17LE-13090-27 (D2AC) D-sub 9-pin female connector (manufactured by Daiichi Elec-
tronic Industries Co., Ltd.) is used as the connector on the Module.
A 17JE-23090-02 (D8B) D-sub 9-pin male connector (manufactured by Daiichi Electronic
Industries Co., Ltd.) is used as the connector on the cable.
* The terminating resistance is put on the positive (+) side.
Failure
Meaning
Indicators
RUN
ERR
TX
RX
PROM Checksum
Error
A PROM checksum
error was detected dur-
ing online self-diagnosis.
Not lit
Flashing
(1)
Depends on the cir-
cumstances
SRAM Error in
Module
A hardware error was
detected during online
self-diagnosis.
Not lit
Flashing
(2)
Not lit
Not lit
CPU Interface Error
A data transmission error
was detected between
Module and CPU during
online self-diagnosis.
Not lit
Flashing
(3)
Not lit
Not lit
Transmission Error
A normal transmission
error was detected.
Lit
Lit
Depends on the cir-
cumstances
Watchdog Timer
Error
A watchdog timer error
was detected.
Not lit
Lit
Depends on the cir-
cumstances
Table 6.1 RS-232C Connectors (CN1/RS-232C, CN2/RS-232C)
Number
Signal
Name
Function
Number
Signal
Name
Function
1
FG
Protective ground
6
N.C.
Not connected
2
SD
Send data
7
SG
Signal ground (0 V)
3
RD
Receive data
8
N.C.
Not connected
4
RTS
Request to send
9
N.C.
Not connected
5
CS
Clear to send
Table 6.2 RS-422/485 Connectors (CN3/RS-422)
Number
Signal
Name
Function
Number
Signal
Name
Function
1
RX (-)
Receive data (-)
5
TRX (+)
*
2
RX (+)
Receive data (+)
6
TX (-)
Send data (-)
3
N.C
Not connected
7
TX (+)
Send data (+)
4
RXR (+)
*
8
SG
Signal ground