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AMT58x-PN ProfiNET®
7. PROFINET IO data description
7.1 Telegrams
A telegram is a rigidly defined bit stream carrying data. In each
telegram the data length and the type of data which is sent to and
from the IO controller is specified. PROFINET interface devices
communicate and stay in sync by sending each other telegrams. The
encoder profile supports four types of telegrams: Standard Telegram
81, Standard Telegram 82, Standard Telegram 83 and Standard
Telegram 84. They are described hereafter. Standard signals are
fully described in the section "Cyclic Data Exchange – Standard
signals" on page 46.
7.1.1 Standard Telegram 81
The Standard Telegram 81 is the default telegram. It uses 4 bytes to
output data from the IO controller to the encoder and 12 bytes to
input data from the encoder to the IO controller.
Output data CONTROLLER => DEVICE
2 bytes
IO Data
Set point
STW2_ENC
Input data DEVICE => CONTROLLER
2 bytes
IO Data
Actual value ZSW2_ENC
7.1.2 Standard Telegram 82
The Standard Telegram 82 uses 4 bytes to output data from the IO
controller to the encoder and 14 bytes to input data from the encoder
to the IO controller.
Output data CONTROLLER => DEVICE
2 bytes
IO Data
Set point
STW2_ENC
Input data DEVICE => CONTROLLER
2 bytes
IO Data
1
Actual
ZSW2_ENC G1_ZSW G1_XIST1 G1_XIST2 NIST_A
value
42
2 bytes
1
2
G1_STW
2 bytes
1
2
G1_ZSW
2 bytes
1
2
G1_STW
2 bytes
4 bytes
2
3
4 bytes
4 bytes
3
4
5
G1_XIST1
G1_XIST2
4 bytes
2 bytes
4
5
6
6
7
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