Specifications

3 Component Names and Settings
11
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.
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.
Pin No. Signal Name I/O Function
A1 (NC) − Not used.
A2 SRD− I/O Send/receive data (-)
A3 SRD+ I/O Send/receive data (+)
A4 (NC) − Not used.
B1 (NC) − Not used.
B2 SRD− I/O Send/receive data (-)
B3 SRD+ I/O Send/receive data (+)
B4 (NC) − Not used.
Shell Shield − Not used.
Name Display Explanation
Color Status
RUN 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
ERR 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
TX Green Lit Sending data
− Not lit Sending of dara stopped, hardware reset
RX Green Lit Searching for receiving carrier
− Not lit No receiving carrier found, resetting hardware
RUN TX RX
ERR