Technical data

5-34 Bosch Rexroth AG | Electric Drives and Controls Rexroth VCP-Operating Concept | R911305038 / 01
Standard Mode
The PLC handshake process runs as follows:
Fig. 5-28: Flow diagram for PLC handshake
Jump to mask with variable,
which has the attribute PLC
handshake
Terminal sets the "Edit Request
bit" in CBR to 1
Controller sets the
"External Data Release
Bit" in CBW to 1
Terminal sets the "Editing Status
Bit" in CBR
Operator presses the data
release key
Operator enters a variable
value
Operator presses the
enter key
Terminal sets the "Refresh
Request Bit" in CBR to 1
Controller refreshes the relevant
variables with current values
Controlller sets the "Refresh
Acknowledge Bit" in CBW to 1
Terminal sets the "Refresh
Request Bit" in CBR to 0
Controller sets the "Refresh
Acknowledge Bit" in CBW to 0
Terminal reads the refreshed
controller variables again
Terminal inactivates the data
release internally
Status LED "Data
Release" switches
ON
Status LED "Data
Release" flashes
Operator enters new
variable values
Operator presses the
enter key
Operator presses the data
release key
Terminal activates the data
release internally
Status LED "Data
Release" is ON
Terminal sets the "Editing
Request Bit" in CBR to 0
Controller sets the "External Data
Release Bit" in CBW to 0 (not
mandatorily required)
Terminal sets the "Editing Status
Bit" in CBR to 0
Terminal activates the data
release internally
Terminal inactivates the data
release internally
Status LED "Data
Release" switches
OFF
End of procedure
"External
Data Release bit"
in CBW set to 1?
No
Yes