Cyclic Receive - Siemens SIMOCODE pro System Manual

Inputs
7.7

Cyclic Receive

Description
With the "Cyclic Receive" function block, you can specify which cyclic data
from the automation system will be further processed via PROFIBUS DP in
SIMOCODE pro. These will normally be PLC/PCS binary control commands.
Connection with the "Control Stations" function block in SIMOCODE pro will
allow the motor to be controlled via PROFIBUS DP . Direct connection of the
analog value with the "AM Output" function block will result in, for example,
the cyclic output of the value sent via PROFIBUS at the output of the analog
module.
The "Cyclic Receive" function blocks consist of:
• Eight bits each (= two bytes, byte 0 and byte 1 for binary information)
• One word (= two bytes, byte 2 to 3 for an analog value, freely
programmable) for basic type 1
• One input each from PROFIBUS DP .
Overall there are three "Cyclic Send" function blocks (0, 1, 2/3)
Schematic
The following schematic shows the "Cyclic Receive" function blocks:
DP
DP
1) BU2 with basic type 1 only
Fig. 7-11: Schematic of the "Cyclic Receive" function blocks
Cyclic services
The Cyclic Data is exchanged between DP master and DP slave once every
DP cycle. The DP master sends the cyclic receive data (Cyclic Receive) to
SIMOCODE pro each time. SIMOCODE pro responds by sending the cyclic
send data (Cyclic Send) to the DP master.
7-16
Cyclic Receive 0
From PROFIBUS DP
1
Cyclic Receive 2/3 )
Cyclic Receive 1
Byte 0
Bit 0
Bit 1
Bit 2
DP
From PROFIBUS DP
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Byte 2/3
Analog value
GWA 4NEB 631 6050-22 DS 03
Byte 1
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
SIMOCODE pro