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PROFINET IO 750-340
•
69
Process Image
WAGO-I/O-SYSTEM 750
PROFINET IO
3.1.5.2.4
Analog Output Modules
The group of analog output modules is divided into 4 types of modules:
Type of module Description
Substitute I/O modules
2AO
2-channel analog output module,
16 Bit output data per signal
channel
2AO_EM
2-channel analog output module,
16 Bit input and output data plus
control and status byte per signal
channel, access to the register
structure using cyclic data
exchange
75x-550, 75x-552, 75x-554,
75x-556, 75x-560, 75x-585
4AO
4-Channel analog output module,
16-Bit signed process value per
signal channel
4AO_EM
4-channel analog output module,
16 Bit input and output data plus
control and status byte per signal
channel, access to the register
structure using cyclic data
exchange
75x-551, 75x-553, 75x-555,
75x-557, 75x-559
Analog output modules receive the consumer status (IOCS) from the I/O
controller and supply it with the provider status (IOPS) of the existing output
information in case only the actual user data is replaced. If all existing
information in the input and output image is made available then the process
data qualifier is additionally transmitted in the opposite directions.
The following table shows a list of the number of bytes for the individual
modules that are allocated in the respective process image (PA) and the
telegrams (TLG) in the direction of transmission and reception (Tx, Rx).
Module 75x-4xx nAE, …
Data length / [Byte]
Data object
PA TLG
Type
E A Tx
Rx
E INST
A INST
2AO
4
-
5
1
-
-
I16
2
4AO
8
-
9
1 - - I16 4
Module 75x-4xx nAE, …
Data length / [Byte]
Data object
PA TLG
Type
E A Tx
Rx
E INST
A INST
2AO_EM
6
6
7
7
U8,I16
2
U8,I16
2
4AO_EM
12
12
12
12
U8,I16 4 U8,I16 4