PI MS249E - Page 207

8 GCS Commands
C-863.12 Mercury Controller MS249E Version: 1.2.1 201
TRS? (Indicate Reference Switch)
Description:
Indicates whether axes have a reference switch with
direction sensing.
Format:
TRS? [{<AxisID>}]
Arguments:
<AxisID> is one axis of the controller
Response:
{<AxisID>"="<uint> LF}
where
<uint> indicates whether the axis has a direction-sensing
reference switch (=1) or not (=0).
Troubleshooting:
Illegal axis identifier
Notes:
The C-863.12 firmware detects the presence or absence of
a reference switch via a parameter (ID 0x14). The C-863.12
activates or deactivates reference moves to the reference
switch (FRF command (p. 155)) according to the value of
this parameter. Adapt the parameter value to your
hardware using SPA (p. 190) or SEP (p. 186). For further
information, see "Reference Switch Detection" (p. 24).
You can use a digital input line instead of the reference
switch as source of the reference point signal for the FRF
command. For further information, see "Digital Input
Signals" (p. 83).
TVI? (Tell Valid Character Set For Axis Identifiers)
Description:
Returns a string with characters which can be used for axis
identifiers.
Use SAI (p. 186) to change the axis identifiers and SAI? (p.
186) to ask for the current valid axis identifiers.
Format:
TVI?
Arguments:
None
Response:
<string> is a list of characters
Notes:
With the C-863.12, the string consists of
1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ-_