Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG Communication
5
5-21
Modbus on PCD7.LRxx-P5 RS-485 interfaces
PCD 1/2/3 write Modbus values to PCD7.LRxx-P5
PCD 1/2/3 PCD7.LRxx-P5
PCD 1/2/3 acting as Modbus
client and writing 16-bit or 32-bit
values to the PCD7.LRxx-P5
Media mapping on the PCD7.LRxx-P5 acting as Modbus server:
11112222 hex for PCD Reg
33334444 hex for PCD Reg +1 … as shown on the left side of the table.
PCD 1/2/3
Register
Number
Example for
value stored
on the PCD
1/2/3 register
Modbus Holding
Register Number
PCD7.LRxx-P5
Register Number
PCD7.LRxx-P5
Register content if
written with 16 bits
PCD7.LRxx-P5
Register content if
written with 32 bits
PCD7.LRxx-P5
Register content if
written with 32 bits
swapped
PCD Reg
11112222
hex
HR0 / HR1 PCD Reg 0
22224444
hex
11112222
hex
22221111
hex
PCD Reg+1
33334444
hex
HR2 / HR3 PCD Reg 1
66668888
hex
33334444
hex
44443333
hex
PCD Reg+2
55556666
hex
HR4 / HR5 PCD Reg 2
AAAACCCC
hex
55556666
hex
66665555
hex
PCD Reg+3
77778888
hex
HR6 / HR7 PCD Reg 3
EEEE1111
hex
77778888
hex
88887777
hex
PCD Reg+4
9999AAAA
hex
HR8 / HR9 PCD Reg 4
33335555
hex
9999AAAA
hex
AAAA9999
hex
PCD Reg+5
BBBBCCCC
hex
HR10 / HR11 PCD Reg 5
77779999
hex
BBBBCCCC
hex
CCCCBBBB
hex
PCD Reg+6
DDDDEEEE
hex
HR12 / HR13 PCD Reg 6 ---
DDDDEEEE
hex
EEEEDDDD
hex
PCD Reg+7
FFFF1111
hex
HR14 / HR15 PCD Reg 7 ---
FFFF1111
hex
1111FFFF
hex
PCD Reg+8
22223333
hex
HR16 / HR17 PCD Reg 8 ---
22223333
hex
33332222
hex
PCD Reg+9
44445555
hex
HR18 / HR19 PCD Reg 9 ---
44445555
hex
55554444
hex
PCD Reg+10
66667777
hex
HR20 / HR21 PCD Reg 10 ---
66667777
hex
77776666
hex
PCD Reg+11
88889999
hex
HR22 / HR23 PCD Reg 11 ---
88889999
hex
99998888
hex
PCD Reg+12
AAAABBBB
hex
HR24 / HR25 PCD Reg 12 --- --- ---
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