Instruction Manual PSx3xxMod
27
f) Abort run when the master fails
If the connection to the master is interrupted during a positioning run, the master
cannot abort an actual run. An automatic run abort can be generated by using HR 40.
A value greater than 0 sets the time within the Master must send a new and valid
request to keep the connection alive. A timout in the device will result in aborting the
run.
g) Optional: Manual run using external keys (jog key mode)
A manual run can be performed using external keys under the following conditions:
1) when the Modbus is not connected and the address 00 is set with the help of the
address switches
2) when the Mod
bus is connected and in the control word bit 5 is active (‘release for
jog key mode’) and bit 4 is inactive (‘release for positioning by bus’)
The Mo
dbus is recognized as “communicating” if there’s at least one valid
telegram to the drive each second.
Altogether there’s the following assignment:
Modbus
communicating
address
control
word
bit 4
control
word
bit 5
external
keys
no
> 00
X
X
inactive
no
00
X
X
active
yes
X
X
0
inactive
yes
X
1
X
inactive
yes
X
0
1
active
Bit 5 (‘release for jog key mode with the external keys’) and bit 4 (‘release for
positioning by bus’) cannot be set simultaneously. Changing the release while running
(for example from jog key mode to positioning by bus) aborts a run in the other
operation mode.
The operator can adjust the number of increments for a single step via HR 61. The
single step is being executed if one of the external keys is being pressed. If the
external key has been released before the end of the single step, it will be completed
nevertheless. If the external key stays pressed further on, after a short waiting time a
continuous manual run might join the single step under some circumstances. This
continuous manual run will run as long as the external key stays pressed. The
continuation of a single step with a manual run is always enabled if the Modbus is not
active. If the Modbus is active, additionnally to bit 5 of the control word also bit 3
(‘release for manual run in jog key mode’) has to be activated. If bit 3 is not set, each
pressing of the external key results in a single step, even if the key is pressed longer
than the duration of the single step.
The idle period before the drive switches into manual run is specified with HR 87. In
manual run the drive runs maximum to the specified limit switch position (HR52/53
resp. HR 54/55).
If during an jog run both external keys are pressed, the run is aborted immediately. A
new jog run is only possible if both keys are released.
