19
KWE P
/N 3940
46 Ve
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502 a
nd 502D
MODBUS G
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2
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Modbus Information
Registers
This device considers Holding Registers and
Input Registers Identical; the same data will
be found in either.
Holding Register 1 begins at address 40001.
Registers 1 to 23 are stored internally in
EEPROM and will be remembered during
power cycle.
Do not read more than 40 Registers
simultaneously, and do not exceed address
78 or an exception response will be
produced.
Coil and Input Status are not used on this
device.
Holding Register
Description
Notes
Units
Writeable
1 (40001)
Boiler 1 LON Address (Configured Value must be set during
commissioning)
1..99 N/A
Writeable
2
Boiler 2 LON Address (Configured Value must be set during
commissioning)
1..99 N/A
Writeable
3
Boiler 3 LON Address (Configured Value must be set during
commissioning)
1..99 N/A
Writeable
4
Boiler 4 LON Address (Configured Value must be set during
commissioning)
1..99 N/A
Writeable
5
Zone/Cascade/Boiler LON Address (Configured Value must be set
during commissioning)
1..99 N/A
Writeable
6
Number of Zones on the Zone/Cascade/Boiler (Configured Value must
be set during commissioning)
1..3 N/A
Writeable
7
Zone/Cascade/Boiler DHW Writeable Set-Point
°C/°F
Writeable
8
Zone/Cascade/Boiler Zone A1 Writeable Curve Shift
°K
Writeable
9
Zone/Cascade/Boiler Zone A1 Writeable Curve Slope
0.1 Res.
N/A
Writeable
10
Zone/Cascade/Boiler Zone A1 Writeable Curve Room Temp. Normal
°C/°F
Writeable
11
Zone/Cascade/Boiler Zone A1 Writeable Curve Room Temp. Reduce
°C/°F
Writeable
12
Zone/Cascade/Boiler Zone A1 Writeable Supply Set-Point
°C/°F
Writeable
13
Zone/Cascade/Boiler Zone M2 Writeable Curve Shift
°K
Writeable
14
Zone/Cascade/Boiler Zone M2 Writeable Curve Slope
0.1 Res.
N/A
Writeable
15
Zone/Cascade/Boiler Zone M2 Writeable Curve Room Temp. Normal
°C/°F
Writeable
16
Zone/Cascade/Boiler Zone M2 Writeable Curve Room Temp. Reduce
°C/°F
Writeable
17
Zone/Cascade/Boiler Zone M2 Writeable Supply Set-Point
°C/°F
Writeable
18
Zone/Cascade/Boiler Zone M3 Writeable Curve Shift
°K
Writeable
Important Configuration Settings
Holding Register Point Description
Details
1
Boiler 1 LON Address
Participant # / Node ID (Address 77)
Default 1 -4 for Vitotronic 100 controls
Rotary Dial Position for KK10LON and KW10B
Add 100 (101 - 104) for KK10LON control
Add 200 (201 - 204) for KW10B control
2
Boiler 2 LON Address
3
Boiler 3 LON Address
4
Boiler 4 LON Address
5 Zone/Cascade/Boiler
LON Address
Participant # of cascade/zone control
Default 5 for Vitotronic 300 control
Add 200 (205) for MW2 control (for use with WB2B boiler over KM-BUS)
6
Number of Zones on the
Zone/Cascade/Boiler
Number of zones on the cascade/zone control. Including the common supply
zone (A1). Set 0 if no cascade or 1 through 3 for number of zones.