Specifications

Multi-Zone Gas Monitors
64 P/N: 3015-5074 Rev 10
Variable Type Length Description
Index UI 2 Point to current reading
Time TIM 1300
Time record for each of the 100 log points. The format for the TIM type is
defined in note 2 of zone data
PPM UI 200 Last 100 log points (2 byes per point)
B.3.25. MODBUS Exception Responses
The following MODBUS exception responses are supported by the unit.
01 Illegal Function
02 Illegal Data Address
03 Illegal Data Value
06 Slave Device Busy (Occurs only when MZ is connected to the bus through an RD and the RD is
not in the SYSTEM or ZONE VIEW screen)
B.3.26. MODBUS Gas Enumeration
The following table provides decimal and hexadecimal MODBUS enumerations for supported refrigerant
Refrigerant Gas DEC HEX Refrigerant Gas DEC HEX
CO
2
/R-744 0 00 R508B 21 15
NH
3
/R-717 0 00 H1301 22 16
R11 0 00 R408A 23 17
R12 1 01 FA188 24 18
R22 2 02 R236FA 25 19
R23 3 03 N1230 26 1A
R113 4 04 R227 27 1B
R114 5 05 HFP 28 1C
R123 6 06 FC72 29 1D
R124 7 07 R21 30 1E
R134A 8 08 R125 31 1F
R401A 9 09 H1211 32 20
R402A 10 0A H2402 33 21
R402B 11 0B R245FA 34 22
R404A 12 0C R422A 35 23
R407A 13 0D R422D 36 24
R407C 14 0E R427A 37 25
R409A 15 0F H1234YF 38 26
R410A 16 10 R424A 39 27
R500 17 11 R426A 40 28
R502 18 12 R438A 41 29
R503 19 13 R32 42 2A
R507 20 14