MODBUS Installation and Operation Manual
9
HT# 059266-00A
Multi-MOD
reg /
VarIaBle#
DeSCrIPTIOn
MUlT
(if not 1)
UOM
range / STaTeS / SPeCIal
ValUeS
reaD
Only
190
Reset Ratio
0=1:4, 1=1:3, 2=1:2, 3=1:1 .5,
4=1:1 .25, 5=1:1, 6=1 .25:1,
7=1 .5:1, 8=2:1, 9=3:1, 10=4:1
191
Lead Stage Rotation Mode
0=Manual, 1=Time, 2=Last-On
192
Periodic Rotation Interval
Hours
1 - 999
193
Setback
10
Psi,
Psi,
°C,
°F
0 - 7 .5psi
0 - 75psi,
°C,
°F
194
Set point
10
Psi,
Psi,
°C,
°F
0 .0-15 .0psi, 0 .0-30 .0psi
0-100psi,
-40 to +122°C,
-40 to +250°F
195
System Run-on
Minutes
0 to 360
196
Standby Delay
Minutes
1 - 60
197 through
216
Stage Relay(Stages 1-20)
0=Off, 1=On
X
217 through
236
Modulation Level(Stages 1-20)
%
0 to 100
X
237
System Relay
0=Off, 1=On
X
238
System Sensor
10
Psi,
Psi,
°C,
°F
0 .0 to 15 .0psi,
0 .0 to 30 .0psi, 0 - 100psi,
-40 - +122°C,
-40 - +250°F
(32000 =Open, 32001=Shorted)
X
239
Calculated Target
°C, °F
21 - 122°C, 70 - 250°F
X
Multi-MOD Platinum notes
♦1
If specified, divide a read value by this to obtain the actual value – Multiply desired value by this before writing .
♦2
For variables that specify them, if a read value is a special value (32000 - 32005), do not divide by ‘MULT' .
♦3
Strings are packed 2 characters per register, most significant byte first .
♦4
Multi-register values are stored
big endian
(first register x 65536 + second register = value) .
note:
All variables are stored as ‘Holding Registers’ . MODBUS functions
• ‘Read Holding Registers’ (function code 3),
• ‘Write Single Register' (function code 6),
• and ‘Write Multiple Registers’ (function code 16) are supported .
note:
All variables with multiple UOM’s depend upon the value of ‘Input Mode’ to determine which to
use . Objects with only °F/°C UOM’s default to °F when ‘Input Mode’ is not temperature .
note:
‘Offset Temp’, ‘Reset Ratio’ and ‘Calculated Target’ are not used
unless ‘Input Mode’ is set to ‘Reset °F’ or ‘Reset °C’ .
note:
When writing to the ‘Manual Modulation Level’ of a stage, the ‘Stage Mode’ of that stage will change to ‘Manual’ .
note:
Use the Multi-Mod Platinum Installation and Operation manual for supplementary information .
