Communications Connectors (Cn2); Led Indicators - YASKAWA SI-T/ V7 Instructions Manual

3.2

Communications Connectors (CN2)

The communications connectors connect the SI-T/V7 Unit to the communications lines of
the MECHATROLINK-I or MECHATROLINK-II . The following table shows the pin num-
bers and their functions.
Pin No.
A1
A2
A3
A4
B1
B2
B3
B4
Shell
3.3

LED Indicators

The LED indicators indicate the status of the communications of the MECHATROLINK-I
or MECHATROLINK-II and the SI-T/V7 Unit.
However, these indicates are for maintenance checks at Yaskawa. Use the Digital Operator
to check the status.
Name
RUN
ERR
TX
RX
Signal Name I/O
−
(NC)
SRD− I/O
SRD+ I/O
−
(NC)
−
(NC)
SRD− I/O
SRD+ I/O
−
(NC)
−
Shield
RUN TX
Display
Color Status
Green Lit Normal operation
−
Not lit Communications CPU stopped, resetting hardware, RAM check
error, DPRAM check error, station address setting error, or
Inverter model code error
Red Lit Watchdog timeout error, communications error, or resetting hard-
ware
Red Blinking ROM check error (once), RAM check error (twice)*, DPRAM
check error (3 times)*, communications ASIC self-diagnosis error
(4 times) *, ASIC RAM check error (5 times), station address set-
ting error (6 times) *, Inverter model code error (7 times) *
*: Indicates the number of blinking.
−
Not lit No communications error or self-diagnosis error
Green Lit Sending data
−
Not lit Sending of dara stopped, hardware reset
Green Lit Searching for receiving carrier
−
Not lit No receiving carrier found, resetting hardware
11
3 Component Names and Settings
Function
Not used.
Send/receive data (-)
Send/receive data (+)
Not used.
Not used.
Send/receive data (-)
Send/receive data (+)
Not used.
Not used.
RX
ERR
Explanation