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Modbus Communications (continued)
RPM10 Variable List
Variable Name
75
Output 3 Signal
Type
76
Output 3 Range
77
Output 3 Signal
78
Output 3 Value
79
Status Index
Room 1 Label
80 to 86
Room 2 Label
87 to 93
Anteroom Label
94 to 100
RPM20 Variable List
Variable Name
Number of Rooms
0
Devices Controlled
1
Measurements
2
Displayed
Display Average
3
Units
4
Access Codes
5
®
Network/Modbus
Communications
Variable
Address
Read/Write
Read
Read
Read
Read
Read
Read
Read
Read
Variable
Address
Read/Write
Read
Read
Read/Write
Read
Read/Write
Read/Write
Integer DDC system receives
1
None
If Pressure: Displayed in inches H
Host DDC system must divide value by
100,000 to report pressure correctly
If Flow: Displayed in cfm
1
4-20 mA
2
0 to 10 VDC
0 to 100%
1
Normal
2
Room 1 Negative Low Alarm
3
Room 1 Negative High Alarm
4
Room 1 Positive Low Alarm
5
Room 1 Positive High Alarm
6
Low Exhaust Alarm
7
Low Supply Alarm
2
Data Error
0
Integer DDC system receives
1
1 Room
2
1 Room
3
2 Rooms with Anteroom
1
None
1
Room Status
2
Room Status and Pressure
3
All Measurements
1
1 second
2
2 seconds
3
3 seconds
4
5 seconds
5
10 seconds
6
20 seconds
7
40 seconds
1
in H
O, cfm, F
2
2
Pa, lps, C
3
3
Pa, m
/hr, C
1
Off
2
Room Mode
3
Menus
4
Room Mode and Menus
O.
2
77
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Table of Contents
Troubleshooting
