Temporarily Reserved Station Specification Function - Mitsubishi Electric FX5-DP-M User Manual

4.7
Temporarily Reserved Station Specification
Function
This function can be used to switch a DP-Slave to a temporarily reserved station when the DP-Slave from network is isolated
temporarily.
A temporarily reserved station can be changed by the buffer memory without changing the slave parameter in PROFIBUS
Configuration Tool.
For the FX5-DP-M to reflect the settings for the temporarily reserved station specification function, suspend
data exchange and then turn off and on 'Data exchange start request signal' (Un\G2.b0) when module is in
communication mode.
DP-Slaves that can be switched
• DP-Slaves can be switched into temporarily reserved stations.
• Temporarily reserved stations can be switched into DP-Slaves.
• Reserved station (Unchecked DP-Slaves in "Slave is active" of "Slave Settings" window) cannot be switched into a DP-
Slave or temporarily reserved station. ( Page 87 Slave Settings)
DP-Slaves which are checked in "Slave is active" in "Slave Settings" window support the temporarily reserved
station specification function.
The corresponding DP-Slaves can be checked in 'Parameter setting status area (Active station)' (Un\G23584
to Un\G23587).
Temporarily reserved stations specification and clear
Execute the temporarily reserved station specification function by the following procedure.
■Setting method
1.
Set the DP-Slaves to switch into temporarily reserved stations as 'Temporarily reserved station specification request
area' (Un\G23608 to Un\G23611). ( Page 149 Temporarily reserved station specification request area (Un\G23608
to Un\G23611))
2.
Turn on 'Data exchange start request signal' (Un\G2.b0).
3.
When temporarily reserved stations have been specified, the result is stored in 'Temporarily reserved station
specification status area' (Un\G23600 to Un\G23603) and 'Data exchange start completed signal' (Un\G0.b0) turns on.
( Page 148 Temporarily reserved station specification status area)
■Clear method
1.
Turn off 'Data exchange start request signal' (Un\G2.b0).
2.
Through 'Temporarily reserved station specification request area' (Un\G23608 to Un\G23611), clear temporarily reserved
stations of the specified DP-Slaves.
3.
Turn on 'Data exchange start request signal' (Un\G2.b0).
4.
When temporarily reserved stations have been cleared the result is stored in 'Temporarily reserved station specification
status area' (Un\G23600 to Un\G23603) and 'Data exchange start completed signal' (Un\G0.b0) turns on.
The reserved stations specified by the current slave parameters and temporarily reserved stations specified
by the temporarily reserved station specification function can be checked in 'Slave status area (Reserved
station setting)' (Un\G23048 to Un\G23051).

4.7 Temporarily Reserved Station Specification Function

4
4 FUNCTIONS
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