Specifications

CC-Link Head Station STL-BT1 (CC-Link)
3 - 12
MITSUBISHI ELECTRIC
Initial Data Transfer
After power-on or hardware reset, the head station STL-BT1 requests its initial data (i.e. the system bits
for fault behaviour) from the master station as described below.
Fig. 3-14: Timing diagram of the system flags
Remote device
Signal name Description
Input Output
RX(n+1)8
Initial data processing
request
After the power is turned on or after the hardware reset, the
initial data processing request flag is turned on by the head
station STL-BT1 in order to request the initial data setting.
It is turned off when the initial data processing is complete
(When the initial data processing complete flag RY(n+1)8 is
turned on).
RY(n+1)8
Initial data processing com-
plete
After the power is turned on or after the hardware reset, the
initial data processing complete processing is executed by
the initial data processing request, and this flag is turned on
after the processing is completed.
RX(n+1)9 Initial data setting complete
When there is an initial data setting request (i.e. RY(n+1)9 is
turned on), this flag is turned on by the initial data setting
completion.
When the initial data setting request flag is turned off after
the initial data setting completion, the initial data setting
complete flag is also turned off.
RY(n+1)9 Initial data setting request This flag is turned on to set or modify the initial data.
RX(n+1)A Error status
This flag is turned on when an error occurs in the head station
STL-BT1.
RX(n+1)B Remote station READY
This is turned on when the initial data setting is complete and
the head station STL-BT1 is in the READY status, after the
power is turned on or after the hardware reset.
It is turned off during the test mode. (This is used to interlock
the read and write from the master module.)
Tab. 3-7: Remote devices for initialization
RX(n+1)8
Initial data processing request
RY(n+1)8
Initial data processing complete
RX(n+1)9
Initial data setting complete
RY(n+1)9
Initial data setting request
RX(n+1)B
Remote station READY
Executed by the sequence program
Executed by the head station STL-BT1