Acknowledging Errors - Festo VTEM Description, Function, Parameterisation

Function
Example of input data with the content of the most recent entry in a malfunction list
Starting point for the sample content of a malfunction list: (è Tab. 104 Example of a malfunction list).
Example of input data with the content of the most recent entry in a malfunction list
PDI byte 1
Command
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 1 0 1
transfer control channel = 31
= 2
PDI byte 3
Parameter
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 0
index = 1
PDO byte 5
Value
Bit Bit Bit Bit
15 14 13 12
0 1 0 0
1 ( active 0 (no malfunction subcode)
error)
Tab. 106 Example of input data with the content of the most recent entry in a malfunction list
2.8.3.6

Acknowledging errors

To change the valve status (valve state) from "0 (not ready) to"1" (configurable), the error must be
acknowledged once the cause has been eliminated.
1. End transfer mode by setting the transfer control (PDO byte 1, bits 7 ... 5) to a value of "3". The
valve switches to mode (valve mode) 61, valve status (valve state) is "error" (value 3).
2. Rectify the cause of the error. The valve status changes to "not ready" (value 0).
3. Set operating mode of valve (valve mode, PDO byte 0, bits 5 ... 0) to the value "62" ("acknow-
ledge error"). Status of the valve changes to "ready" (value 1).
Acknowledgement deletes all entries in the malfunction list for this valve slot.
86
1 1 1 1
0 0 0 1
Bit Bit Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
11 10
0 0 0 0
PDI byte 0
1 1 1 1
valve state valve mode = 63 (transfer mode)
= 3 (fail-
ure)
PDI byte 2
0 0 0 0
addressed target = 0
PDO byte 4
0 0 0 0
10 (short circuit in one of the connected sensors
at input module 2)
1 1 1 1
0 0 0 0
1 0 1 0
Festo — VTEM — 2019-03b