Fm210_01b_oi_e.docx / Nov-20
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Trim+/-
The Trim+/- function continuously adds or subtracts increments into the differential counter and thus
ensures that the output runs away, for example for a position shifting to the master drive. The time per
added or subtracted pulse is indicated by the Trim Speed parameter. A setting of zero executes this
in minimum time (loop time). This command is similar to Offset Edge.
Trim pulses are saved in an internal Trim Counter Register and can be read out. (code position :4).
The internal Trim Counter Register can be reset by using the Reset Edge command (setting Special
Mode = 1).
Trim+:
Triggering Parameter
Comment
Addition
Input
Input X Config = 0/1
Input X Function = 7
If Input X Config = 0 is set, the command is
triggered in case of a "low" state at input X.
The status of the input can be
read in the OS Input field
Lecom
Code 65 (dec)
Release: 04 31 31 02 36 35 30 03 30
Set: 04 31 31 02 36 35 31 03 31
(Unit no. 11, command in hex)
If a 1 is written at code 65, the
command is set.
Modbus
FF0C (hex)
Release: 07 06 FF 0C 00 00 79 BB
Set: 07 06 FF 0C 00 01 B8 7B
(Modbus address = 7, command in hex)
If a 1 is written to FF0C, the
command is set.
Trim-:
Triggering Parameter
Comment
Addition
Input
Input X Config = 0/1
Input X Function = 8
If Input X Config = 0 is set, the command is
triggered in case of a "low" state at input X.
The status of the input can be
read in the OS Input field
Lecom
Code 66 (dec)
Release: 04 31 31 02 36 36 30 03 33
Set: 04 31 31 02 36 36 31 03 32
(Unit no. 11, command in hex)
If a 1 is written at code 66, the
command is set.
Modbus
FF0E (hex)
Release: 07 06 FF 0E 00 00 D8 7B
Set: 07 06 FF 0E 00 01 19 BB
(Modbus address = 7, command in hex)
If a 1 is written to FF0E, the
command is set.
Attention:
If too many increments per time are added or subtracted and the closed
loop control is not able to follow, the differential counter may run away. The
closed loop control or the affected parameters have to be adjusted in a way
that this does not happen. Alternatively, the differential counter must be
reset afterwards (Reset Edge)
Also note the settings for the output phase error, because the differential
counter is modified during trim operation.