42 Process Image
753-1630 SMI Master Module 230 V AC
Manual
Version 1.2.0 FW/HW Version 02/01
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5.3
Fieldbus Coupler Mode
Process data is communicated via the cyclic process image. The SMI master
module can be controlled without PLC programming via a fieldbus coupler.
Use of the cyclic process image requires that all SMI drives are addressed
properly.
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5.3.1
Output and Input Process Image
Table 20: Output and Input Process Image in Fieldbus Coupler Mode
Byte Word
Output process image
Input Process Image
0
0
Control byte C0
Status byte S0
1
Extended control byte C1
Extended status byte S1
2
1
2-button operation upwards
-
Bit 0
Address 0
…
…
Bit 7
Address 7
3
2-button operation upwards
-
Bit 0
Address 8
…
…
Bit 7
Address 15
4
2
2-button operation downwards
-
Bit 0
Address 0
…
…
Bit 7
Address 7
5
2-button operation downwards
-
Bit 0
Address 8
…
…
Bit 7
Address 15
6
3
Group mask, see section “Addressing
SMI Drives”
Reflection of the group mask bit 0…15
7
8
4
Command, see section “SMI
Commands”
Response to the command
9
10
5
Shutter target position
(Shutter height: 0 % to 100 %, value
range: 0..254)
Shutter actual position
(for SMI command
“REQ_POSITIONING”, otherwise
invalid)
11
Slat target position
(Slat height: 0 % to 100 %, value range:
0..254)
Slat actual position
(for SMI command “REQ_POSITIONING”,
otherwise invalid)
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