Festo VTEM - Return Values

Festo — VTEM — 2021-05f
Function
75
3.6.6 Return values
3.6.6.1 Status of the Motion App (app state)
Status of the digital inputs (end position detection)
The status of the inputs of the digital input module CTMM-…-D-… that are assigned to the valve
currently in use is shown using bits 2 and 0 in byte 1 (PDI).
The assignment of inputs is carried in the system parameters (
è
3.6.3 System parameters used).
Position Bit 2 Bit 1 Bit 0
End position advanced reached
1)
0/1 – –
End position retracted reached
2)
– – 0/1
1) (4) pressurised, (2) exhausted; switching position 14
2) (2) pressurised, (4) exhausted; switching position 12
Tab. 93: Status of the digital inputs
Switching position at the air ports (2) and (4)
The switching position at the air ports (2) and (4) of the valve is given by bits 6 … 5 (4) and bits 4 … 3
(2) in byte 1 (PDI).
Switching position Bit 6 Bit 5 Bit 4 Bit 3
(4) (2)
Closed – 0 0 – –
Pressurised – 0 1 – –
Exhausted – 1 0 – –
Error
1)
– 1 1 – –
– Closed – – 0 0
– Pressurised – – 0 1
– Exhausted – – 1 0
– Error
1)
– – 1 1
1) If the problem persists, contact Festo Support.
Tab. 94: Switching position at the air ports
Warnings
Warnings in the diagnostic memory of the valve are shown via bit 7 in byte 1 (PDI).
Value Description
0 There are no warnings from the active Motion App.
1 There is a warning in the diagnostic memory of the Motion Terminal.
Tab. 95: Warning
For how to deal with warnings and errors:
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3.8 Diagnostics options.