Baumer GXAMW Manual - Page 18

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Baumer GXAMW Manual
6.3.

Telegram 81 of profile PROFIdrive

In line with PROFIBUS DP-V2 profile the encoder applies for cyclic communication in clock-synchronous
operation telegram81 of the PROFIdrive profile which means cyclic and clock-synchronous transmission of
12 bytes input data and 4 bytes output data.
Input data
There is a cyclic transmission of input data from encoder to control.
15
ZSW2
Slave Sign-of-Life
15
G1_ZSW1
SE
31
G1_XIST1
31
G1_XIST2
Bit SE:
Sensor Error
If this bit is set, G1_XIST2 will come with an error code instead of the position value
Bit PS:
Parking Sensor Active (Acknowledgement)
If this bit is set, the function „Parking Sensor" will be enabled (error output suppressed)
Bit TA:
Transmit absolute value cyclically (Acknowledgement)
If this bit is set, there will be cyclic position transmission in G1_XIST2.
This always applies to the present encoder.
Bit PA:
Preset Acknowledgement
When this bit is set, the preset setting operation at the encoder was successful. The bit
mirrors the preset bit of the output data and is automatically taken back after reset.
Bit EA:
Error Acknowledge Required
If this bit is set, an encoder error will have to be acknowledged. This is not general practice
with the present encoder (bit ever 0)
Position data are transmitted by both input double words G1_XIST1 and G1_XIST2. G1_XIST1
comprises the left-aligned position value, e.g. bit 31 = 1 as maximum position value (corresponding to
scaling). G1_XIST2 contains the right-aligned position value in the standard structure. G1_XIST2
further comprises an error code in case of error. The scaling operation always affects both double
words. The effect of the preset on position value G1_XIST1 can be eliminated by parameterization
(„G1_XIST1 affected by Preset"). In this case G1_XIST1 and G1_XIST2 show different position
values. G1_XIST2 is always affected by preset.
Output data
There is a cyclic transmission of output data to the encoder.
15
STW2
Master Sign-of-Life
15
G1_STW1
SEA
Bit SEA: Sensor Error Acknowledgement
If this bit is set, the error code in G1_XIST2 will be acknowledged what is not
not necessarily required with the present encoder.
Bit PS:
Parking Sensor Active (acknowledgement)
It this bit is set, the function „Parking Sensor" will be enabled (error output suppressed
Bit TA:
Transmit absolute value cyclically (Acknowledgement)
If this bit is set, there will be a cyclic position transmission in G1_XIST2.
This ever applies to the present encoder, no matter if the bit is set or not.
Manual_ProfibusDPV2_BIDE_EN.docx
22.11.12
14
13
12
11
10
0
0
14
13
12
11
10
PS
TA
PA
EA
0
encoder position (left-aligned) with / less preset offset
Encoder position (right-aligned) or error message
14
13
12
11
10
0
0
14
13
12
11
10
PS
TA
PR
REL
0
9
8
7
6
5
0
0
0
0
0
9
8
7
6
5
0
0
0
0
0
9
8
7
6
5
0
0
0
0
0
9
8
7
6
5
0
0
0
0
0
18/41
4
3
2
1
0
0
0
0
0
0
4
3
2
1
0
0
0
0
0
0
0
0
4
3
2
1
0
0
0
0
0
0
4
3
2
1
0
0
0
0
0
0
Baumer IVO GmbH & Co. KG
Villingen-Schwenningen, Germany