Modbus, Communication, Gf-114 – AERCO Modbus Communications Manual User Manual
Page 92
GF-114
MODBUS
Communication
Appendix A
OMM-0035_0C
USER MANUAL
Status Messages & Equations
Page
92 of 200 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph.: 800-526-0288 05/18/12
Table A-3: Conversion Equations for Temperature Variables – Variable Counts to Temp
REGISTER
VARIABLE
TYPE
DEGREES FAHRENHEIT (°F)
DEGREES CELSIUS (°C)
DEGREES_1
20
1000
500
(230)
(RegVar)
Temp(F)
+
+
∗
=
7
1000
500
(128)
(RegVar)
Temp(C)
−
+
∗
=
DEGREES_2
80
1000
500
(220)
(RegVar)
Temp(F)
−
+
∗
=
62
1000
500
(183)
(RegVar)
Temp(C)
−
+
∗
=
DEGREES_3
40
1000
500
(520)
(RegVar)
Temp(F)
+
+
∗
=
4
1000
500
(289)
(RegVar)
Temp(C)
−
+
∗
=
ABS_DEG_1
For (RegVar>0):
+
∗
=
1000
500
(230)
(RegVar)
Temp(F)
For (RegVar<0):
−
∗
=
1000
500
(230)
(RegVar)
Temp(F)
For (RegVar> 0):
+
∗
=
1000
500
(128)
(RegVar)
Temp(C)
For (RegVar< 0):
−
∗
=
1000
500
(128)
(RegVar)
Temp(C)
Table A-4: Conversion Equations for Temperature Variables – Temp to Variable Counts
REGISTER
VARIABLE
TYPE
DEGREES FAHRENHEIT (°F)
DEGREES CELSIUS (°C)
DEGREES_1
+
∗
−
=
230
115
(1000)
20)
(degF
RegVar
+
∗
+
=
128
64
(1000)
7)
(degC
RegVar
DEGREES_2
+
∗
−
=
220
110
(1000)
80)
(degF
RegVar
+
∗
+
=
183
91.5
(1000)
62)
(degC
RegVar
DEGREES_3
+
∗
+
=
600
300
(1000)
40)
(degF
RegVar
+
∗
−
=
289
144.5
(1000)
4)
(degC
RegVar
ABS_DEG_1
For (degF>0):
+
∗
=
230
115
(1000)
(degF)
RegVar
For (degF<0):
−
∗
=
230
115
(1000)
(degF)
RegVar
For (degC> 0):
−
∗
=
128
115
(1000)
(degC)
RegVar
For (degC<0):
−
∗
=
128
64
(1000)
(degC)
RegVar