Rpm20 Variable List - Pressura RPM10 Operation And Service Manual

Modbus Communications (continued)

RPM20 Variable List

Variable Name
Output 3 Signal 77
Output 3 Value 78
Status Index 79
Room 1 Label 80 to 86
Room 2 Label 87 to 93
Anteroom Label 94 to 100
EXAMPLE of 06 Write Single Register function format:
This example changes the normal low face velocity alarm set point to 60 ft/min.
QUERY
Field Name
Slave Address
Function
Starting Address Hi
Starting Address Lo
Data Value (High)
Data Value (Low)
Error Check (CRC)
®
Network/Modbus Communications
Variable
Address Read/Write
Read
Read
Read
Read
Read
Read
RESPONSE
(Hex) Field Name
01 Slave Address
06 Function
00 Starting Address Hi
16 Starting Address Lo
00 Error Check (CRC)
3C
--
Integer DDC system receives
4-20 mA
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
8 Low Temperature Alarm
9 High Temperature Alarm
10 Low RH Alarm
11 High RH Alarm
12 Anteroom Negative Low Alarm
13 Anteroom Negative High Alarm
14 Anteroom Positive Low Alarm
15 Anteroom Positive High Alarm
16 Room 2 Negative Low Alarm
17 Room 2 Negative High Alarm
18 Room 2 Positive Low Alarm
19 Room 2 Positive High Alarm
20 Data Error
(Hex)
01
06
00
16
--
81