Super Systems AC20 RS485 Modbus User Manual
Page 48
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TITLE: MODBUS/J-BUS Protocol for SSi’s- AC20 ENG. 824E REV. 1
INDEX, DIVIDED IN FAMILIES AND GROUPS, OF MODBUS WORDS
Words For Device In Control Mode - Parameters
Menu group 1 – Set point values
138 - Main set point
("SP")
page 18
139 - Auxiliary set point 2
(“SP2”)
page 18
140 - Auxiliary set point 3
(“SP3”)
page 18
141 - Auxiliary set point 4
(“SP4”)
page 18
142 - Carbon monoxide factor
("COF")
page 18
143 - Hydrogen factor
("H2F")
page 18
Menu group 3 - Alarm threshold and hysteresis value
177 - Alarm 1 threshold
("AL1")
page 18
178 - Alarm 2 threshold
("AL2")
page 18
179 - Alarm 3 threshold
("AL3")
page 18
181 - Band alarm 1 threshold low
("bA1.L")
page 18
182 - Band alarm 1 threshold high
("bA1.h")
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183 - Band alarm 2 threshold low
("bA2.L")
page 18
184 - Band alarm 2 threshold high
("bA2.h")
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185 - Band alarm 3 threshold low
("bA3.L")
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186 - Band alarm 3 threshold high
("bA3.h")
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191 - Alarm 1 hysteresis
("HSA1")
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192 - Alarm 2 hysteresis
("HSA2")
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193 - Alarm 3 hysteresis
("HSA3")
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Menu group 4 - Control parameters
148 - Proportional band
("Pb")
page 19
149 - Hysteresis for on/off control mode
("HYS")
page 19
150 - Integral time
("ti")
page 19
151 - Derivative time
("td")
page 19
152 - Integral pre-load
("IP")
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153 - Relative secondary output gain
("r.Gn")
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154 - Dead band/overlap between main/secondary output
("OLAP")
page 19
Menu group 5 - Auxiliary control parameters
1000 - Anti-reset windup
("ArU")
page 20
1003 - Main control output low limit
("ñ.OLL")
page 20
1004 - Main control output high limit
("ñ.OLH")
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1005 - Main control output max rate of rise
("ñ.rñP")
page 20
1006 - Proportional cycle time on main control output
("ñC.CY")
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1007 - Secondary control output low limit
("S.OLL")
page 20
1008 - Secondary control output high limit
("S.OLH")
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1009 - Secondary control output max rate of rise
("S.rñP")
page 20
1010 - Proportional cycle time on secondary control output
("SC.CY")
page 20
1011 - Set point low limit
("rL")
page 20
1012 - Set point high limit
("rH")
page 20
1013 - Rate of change for positive set point variation
("Grd1")
page 20
1014 - Rate of change for negative set point variation
("Grd2")
page 20
1016 - External control of auto/man function
("E.Añ")
page 20