
Contents
i
TABLE OF CONTENTS
1.0 MODBUS COMMUNICATIONS ................................................................................................ 1
1.1 Connectivity to Liebert IntelliSlot 485 Using Modbus .............................................................. 1
1.2 Compatibility with Liebert Equipment ...................................................................................... 1
Table 1 Liebert Equipment and Compatible Liebert IntelliSlot 485 Cards......................... 1
1.3 Implementation Basics ................................................................................................................ 2
1.4 Transmission Format .................................................................................................................. 2
Table 2 Modbus Remote Transmission Unit settings for Liebert IntelliSlot 485
interface card ............................................................................................................. 2
1.5 Modbus Packet Format ............................................................................................................... 2
1.5.1 Device Address ........................................................................................................... 2
1.5.2 Function Code ............................................................................................................ 3
Table 3 Supported Modbus function codes ............................................................................ 3
1.5.3 Data Fields ................................................................................................................. 3
1.5.4 Error Check Field ...................................................................................................... 3
1.6 RTU Framing ............................................................................................................................... 4
Table 4 Query sample ............................................................................................................. 4
Table 5 Response sample ........................................................................................................ 4
2.0 PRECISION COOLING PRODUCTS ......................................................................................... 5
Table 6 Liebert CRV
™
- Status and Coil ................................................................................ 5
Table 7 Liebert CRV - Input and Holding Registers ............................................................. 8
Table 8 Liebert DS
™
and Liebert PEX
™
- Status and Coil .................................................. 12
Table 9 Liebert DS and Liebert PEX - Input and Holding Registers ................................. 16
Table 10 Liebert XDF
™
- Status and Coil .............................................................................. 19
Table 11 Liebert XDF - Input and Holding Registers ...........................................................
21
Table 12 Liebert XDP
™
with Liebert iCOM
®
- Status and Coil ............................................ 23
Table 13 Liebert XDP with Liebert iCOM - Input and Holding Registers .......................... 24
Table 14 Liebert Challenger 3000
™
, Liebert Deluxe System/3
™
, Liebert ICS
™
,
Liebert Himod
™
- Input and Holding Registers - LAM .......................................... 26
Table 15 Liebert DataMate
™
, Liebert Mini-Mate
™
, Liebert Mini-Mate Plus - Input
and Holding Registers - L0B ................................................................................... 29
Table 16 Liebert Mini-Mate 2, Liebert DataMate - Input and Holding Registers -
MM2 .......................................................................................................................... 30
Table 17 Liebert Mini-Mate 8 Ton - Input and Holding Registers - L8T ............................. 32
Table 18 Liebert Atlas Air
™
, Liebert Atlas PEC
™
, Liebert LECS 15
™
- Input and
Holding Registers - C10 2-step ................................................................................ 35
Table 19 Liebert Atlas Air, Liebert Atlas PEC, Liebert CEMS 100
™
- Input and
Holding Registers - C100 4-step .............................................................................. 37
3.0 POWER DISTRIBUTION AND POWER CONDITIONING PRODUCTS ............................................ 39
Table 20 Liebert Datawave
™
, Liebert FPC
™
, Liebert PPC
™
Precision Power Center
- Input and Holding Registers - PMP, PM2 Options for Liebert FPC and
Liebert PPC .............................................................................................................. 39
Table 21 Liebert Datawave, Liebert FPC, Liebert PPC Precision Power Center -
Input and Holding Registers - PMP Option for Liebert FPC and Liebert
PPC ........................................................................................................................... 41
Table 22 Liebert STS
™
, Liebert STS/PDU
™
- Input and Holding Registers - STS .............. 43
Table 23 Liebert STS2
™
, Liebert STS2/PDU
™
- Input and Holding Registers - STS2 ........ 45
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