SBC PCD7.LR P5 Series Manual page 98

Saia-Burgess Controls AG
PCD7.LRxx-P5 write Modbus values to PCD 1/2/3
PCD7.LRxx-P5
PCD7.LRxx-P5 acting as
Modbus client and writing 16-bit
or 32-bit values to the PCD 1/2/3
PCD7.LRxx-P5
Register
Number
PCD Reg
PCD Reg+1
PCD Reg+2
PCD Reg+3
PCD Reg+4
PCD Reg+5
PCD Reg+6
PCD Reg+7
PCD Reg+8
PCD Reg+9
PCD Reg+10
PCD Reg+11
PCD Reg+12
Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
PCD 1/2/3
Media mapping on the PCD 1/2/3 acting as Modbus server:
Example: if client writes 12 Modbus objects, where the content of the PCD register on the client is defined as
11112222 hex for PCD Reg
33334444 hex for PCD Reg +1 ... as shown on the left side of the table.
Example of Modbus
value stored Holding Register
on the Number
PCD7.LRxx-P5
register
11112222 HR0 / HR1
hex
33334444 HR2 / HR3
hex
55556666 HR4 / HR5
hex
77778888 HR6 / HR7
hex
9999AAAA HR8 / HR9
hex
BBBBCCCC HR10 / HR11
hex
DDDDEEEE HR12 / HR13
hex
FFFF1111 HR14 / HR15
hex
22223333 HR16 / HR17
hex
44445555 HR18 / HR19
hex
66667777 HR20 / HR21
hex
88889999 HR22 / HR23
hex
AAAABBBB HR24 / HR25
hex
Modbus on PCD7.LRxx-P5 RS-485 interfaces
PCD 1/2/3 PCD 1/2/3
Register Number Register content if
on the PCD 1/2/3 written with 16 bits
Modbus object
number = PCD
register number
PCD Reg 0 00002222
hex
PCD Reg 1 00004444
hex
PCD Reg 2 00006666
hex
PCD Reg 3 00008888
hex
PCD Reg 4 00008888
hex
PCD Reg 5 0000CCCC
hex
PCD Reg 6 0000EEEE
hex
PCD Reg 7 00001111
hex
PCD Reg 8 00003333
hex
PCD Reg 9 00005555
hex
PCD Reg 10 00007777
hex
PCD Reg 11 00009999
hex
PCD Reg 12
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Communication
PCD 1/2/3 PCD 1/2/3
Register content if Register content if
written with 32 bits written with 32 bits
swapped
Modbus object Modbus object
range 10001 and range 10001 and
higher must be higher must be
used on the PCD used on the PCD
1/2/3. 1/2/3.
To access register To access register
600, it is necessary 600, it is necessary
to access the Mod- to access the Mod-
bus object 11201 bus object 11201
(2 x 600 + 10001) (2 x 600 + 10001)
11112222 22221111
hex hex
33334444 44443333
hex hex
55556666 66665555
hex hex
77778888 88887777
hex hex
9999AAAA AAAA9999
hex hex
BBBBCCCC CCCCBBBB
hex hex
DDDDEEEE EEEEDDDD
hex hex
FFFF1111 1111FFFF
hex hex
22223333 33332222
hex hex
44445555 55554444
hex hex
66667777 77776666
hex hex
88889999 99998888
hex hex
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