heat-timer MODBUS RTU RS485, Installation And Operation Manual

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MODBUS Installation and Operation Manual
11
HT# 059266-00A
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 .
note: Use 'District Steam Delay' when 'Operating Mode' is set to District Steam . Use 'System Setpoint',
'System Differential' and 'Thermal Lockout Enable' when 'Operation Mode' is set to Burner/valve .
note: Use 'Vari-Boost Adjustment' when 'Boost Mode' is set to Vari-Day or Vari+ESD . Use
'Manual Boost Time' when 'Vari-Boost Adjustment' is set to Manual Boost .
note: The MPC Platinum has a schedule, which is 7-days, 4 day/night pairs per day . For example: Register
38 is the first DAY schedule of Monday; Register 39 is the first NIGHT schedule of Monday; Register 46
is the first DAY schedule of Tuesday; Register 47 is the first NIGHT schedule of Tuesday and so on .
note: Use MPC Platinum Installation and Operation manual for supplementary information .
MPCQ PlaTInUM MODBUS VarIaBle lIST
MPCQ reg /
VarIaBle#
DeSCrIPTIOn
MUlT
♦1
(if not 1)
UOM
range / STaTeS / SPeCIal
ValUeS
reaD
Only
1 – 3 Model 6 Character string ♦3 X
4 – 13 Serial Number 20 Character string ♦3 X
14 Firmware Version 100 X
15 Vari-Boost Adjustment 10 0 .1 – 6 .4
16 Boost Mode 0=Disabled, 1=Manual,
2=Vari, 3=Vari+ESD
17 Manual Boost Time Minutes 0 – 120
18,19 Bypass Time Minutes 0 – 2,147,483,647 ♦4 X
20 through 51 Boiler Status (BTYPE=0)®
(BTYPE=1)®
(BTYPE=2)®
(BTYPE=3)®
0=Off, 1=On0=Off, 1=Low,
2=High, 0=Off, 1=Low, 2=Med,
3=High, 0=Off, 1=Low,
2=MLow, 3=Mhigh, 4=High
X
52 Boiler Type See "MPCQ Platinum
Boiler Type Table" on page 12
0=On/Off, 1=2-Stage2=3-
Stage, 3=4-Stage
53 Bypass Mode 0=AUTO, 1=ON
54 Cycle Length Minutes 10 – 240
55 through 86 Extension Panel Stage
Communication Error
0=“”, 1=C/E X
87 Day Heat Adjustment 0 – 15 = A – P
88 Outdoor Day Cutoff °C, °F -6 - 38°C, 20 - 100°F
89 Day Light Saving 0=Enable, 1=Disable
90 Sensor Fault Mode 0=OutputOn,1=OutputOff
91 Sensor Mode 0=°F, 1=°C
92 Lead Boiler See "MPCQ Platinum Boiler
Type Table" on page 12
93 through 124 Lockout Input 0=(inactive), 1=L/O X
125 Logic Mode 0-PID, 1-OSS
126 Last Stage Hold 10 psi 0 .0 – 5 .0
127 Min Runtime Minutes 1 – 60
128 through 159 Boiler Mode 0=Auto, 1=Standby, 2=Off, 3=On
160 Total Boilers 1 – 32/(BTYPE+1)
161 Night Heat Adjustment 0 – 15 = A – P