Acyclic Send - Siemens SIMOCODE pro System Manual

Outputs
6.7

Acyclic Send

Description
In addition to "Cyclic Send" it is also possible to transfer a further 16 bits of
binary information to the PLC/PC via acyclic services.
The "Acyclic Send" function blocks allow you to specify the information to be
transferred acyclically to the automation system via PROFIBUS DP . The
inputs (plugs) of the function blocks must be connected to the respective
sockets.
The "Acyclic Send" function blocks consists of:
• Eight bits each (= two bytes, byte 0 and byte 1 for binary information)
• One output to PROFIBUS DP each.
Overall, there is one "Acyclic Send" function block for BU1 and BU2.
Schematic
The following schematic shows the "Acyclic Send" function blocks:
Byte 0
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Fig. 6-14: Schematic of the "Acyclic Send" function blocks
Acyclic services
Acyclic Send Data will only be transferred on request.
The information (two bytes) can be found in data record 203.
This data record can be read by every master (PLC or PC) that supports the
acyclic services of PROFIBUS DPV1.
Settings
Acyclic Send Data
Byte 0 to 1
Bit 0 to bit 7
Table 6-7: Acyclic Send Data settings
6-18
Acyclic Send 0
DP
to PROFIBUS DP
Control of bits with any signals
(any sockets , e.g. device inputs, Send Data, status information,
events, etc.)
Acyclic Send 1
Byte 1
Bit 0
Bit 1
Bit 2
Bit 3
to PROFIBUS DP
Bit 4
Bit 5
Bit 6
Bit 7
Description
GWA 4NEB 631 6050-22 DS 03
DP
SIMOCODE pro