CIAT AquaCIAT LD Series User manual

ECG-UG-16-006
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AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
1 OF 20
Company private. Do not distribute outside of CIAT Corporation
USER GUIDE
AquaCIAT LD/ILD Chillers
Modbus Communication

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Modbus
Rev A
1/13/17
2 OF 20
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Table of contents
REVISION HISTORY.................................................................................................................. 2
ACRONYMS............................................................................................................................. 2
1. CONNECTION CHANNELS ............................................................................................... 3
1.1. RS485 SOCKET DETAILS ............................................................................................................. 3
1.2. RJ45 SOCKET DETAILS................................................................................................................ 4
2. MODBUS FUNCTIONS .................................................................................................... 5
3. MAPPING INTERFACE..................................................................................................... 6
REVISION HISTORY
Revision
Date
Description of Change
Original
13/06/2016
Initial
Rev A
07/09/2016
Added SH and SUCT_T in mapping (SR1.4 and
above)
ACRONYMS
DI Discrete Input
EXV Expansion Valve
FC Free Cooling
HR Holding Register
IEEE Institute of Electrical and Electronics Engineers
IP Internet Protocol
IR Input Register
Net Network
OAT Outside Air Temperature
RTU Remote Terminal United Technologies Corporation
SCT Saturated Condensing Temperature
SST Saturated Suction Temperature
TCP Transmission Control Protocol
xxLS ..Low Speed
xxHS ..High Speed

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Modbus
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1. Connection channels
Here below sockets available for communication purposes with external devices.
sockets identification available for communication
1.1.RS485 socket details
Bus “port0”is intended to Modbus serial line with RS485 (i.e. no control flow)
Transmission mode:
Used for Local area network communication type by external devices.
With twisted shielded pair
distance up to 1000m without amplifier
Normally configurable at 9600, 19200 or 38400 baud in half duplex.
Parity bit may be active or deactivated. If parity is disabled, additional stop bits are
automatically set for frame timing considerations. Otherwise, parity may be odd or
even according to the settings chosen.
Exclusively RTU mode operates with configurable combination (No ASCII mode
permission)
1 start, 8 data, even parity, 1 stop bit
1 start, 8 data, odd parity, 1 stop bit
1 start, 8 data, even parity forced, 1 stop bit
1 start, 8 data, odd parity forced, 1 stop bit
1 start, 8 data, 2 stop bit
1 start, 8 data, no parity , 1 stop bit (EXCLUDED)
RTU protocol is compatible with both Little/ Big Endian for data field (i.e. either most
significant byte is sent first or Least significant byte is sent first)
Unit identifier must be declared from 1 to 247 as slave product number setup (i.e.
station number)
Cyclic Redundancy Check is made by the RTU protocol layer as defined in Appendix A
of “Modbus over serial line” specification available at modbus.org

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Modbus
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Due to floating no native floating point representation for the Modbus
communication protocol, IEEE754 representation has been integrated. As the
opposite, float handled as integer is also available (i.e. float X 10) depending on
setup.
Bus “port1”is proprietary and therefore reserved for internal purpose.
1.2.RJ45 socket details
Modbus Ethernet is intended to Modbus IP.
Used for wide area network communication type by external devices (building management
system tool or maintenance tool and so on…)
Cross pair wired cable shall be used for nominal configuration.
distance up to 100m without amplifier
Speed communication at 10 Mega baud not configurable
IPv4 address configurable for class address with DHCP NOT active for
Class A (0.xxx.xxx.xxx to 127.xxx.xxx.xxx)
Class B (128.0.xxx.xxx to 191. 255.xxx.xxx)
Class C (192.0.0.xxx to 223.255.255.xxx)
(IP address declared on the control unit needed to set up connection with external
device)
All requests are sent via Transfer Control Protocol on registered port 502 by default
but other port number may be set as calibrate value.
TCP/IP Modbus protocol is compatible with both Little/ Big Endian for data field (i.e.
either most significant byte is sent first or Least significant byte is sent first)
Unit identifier must be declared from 1 to 247 as slave product number setup (i.e.
station number)

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Modbus
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2. Modbus Functions
The following standard function are supported
Code
Modbus function
Address register range
Application
01 with quantity 1
READ COIL STATUS
0 to 9999 (decimal)
None
01 with quantity N
READ MULTIPLE COIL STATUS
(from 1 to 2000max.
contiguous)
None
15 with quantity 1
WRITE COIL
None
15 with quantity N
WRITE MULTIPLE COILS (from 1
to 2000max. contiguous)
None
02 with quantity 1
READ DISCRETE INPUT
0 to 9999 (decimal)
Alarms
02 with quantity N
READ MULTIPLE DISCRETE
INPUTS (from 1 to 2000max.
contiguous)
04 with quantity 2
READ INPUT REGISTER
0 to 9999 (decimal)
Useful user parameters
04 with quantity NX2
READ MULTIPLE INPUT
REGISTERS (from 1 to 123 max.
contiguous)
Useful user parameters
03 with quantity 2
READ HOLDING REGISTER
0 to 9999 (decimal)
Configuration or service dataset
03 with quantity NX2
READ MULTIPLE HOLDING
REGISTERS (from 1 to 123 max.
contiguous)
Configuration or service dataset
16 with quantity 2
WRITE HOLDING REGISTER
Configuration or service dataset
16 with quantity NX2
WRITE MULTIPLE HOLDING
REGISTERS (from 1 to 123 max.
contiguous)
Configuration or service dataset

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Modbus
Rev A
1/13/17
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3. Mapping interface
Table
Item
Description
Media
Type
Address
(hex)
Format
ALM
COOLER_FREEZE_F
ALM_COOLER_FREEZE_F
DI
1
(0001)h
Byte (8-bit)
ALM
LOW_SUCTION_A_F
ALM_LOW_SUCTION_A_F
DI
5
(0005)h
Byte (8-bit)
ALM
LOW_SUCTION_B_F
ALM_LOW_SUCTION_B_F
DI
6
(0006)h
Byte (8-bit)
ALM
HIGH_SH_A_F
ALM_HIGH_SH_A_F
DI
8
(0008)h
Byte (8-bit)
ALM
HIGH_SH_B_F
ALM_HIGH_SH_B_F
DI
9
(0009)h
Byte (8-bit)
ALM
LOW_SH_A_F
ALM_LOW_SH_A_F
DI
11
(000B)h
Byte (8-bit)
ALM
LOW_SH_B_F
ALM_LOW_SH_B_F
DI
12
(000C)h
Byte (8-bit)
ALM
COOLER_LOCK_F
ALM_COOLER_LOCK_F
DI
14
(000E)h
Byte (8-bit)
ALM
CPA1_REVERSE_ROT_F
ALM_CPA1_REVERSE_ROT_F
DI
16
(0010)h
Byte (8-bit)
ALM
CPA2_REVERSE_ROT_F
ALM_CPA2_REVERSE_ROT_F
DI
17
(0011)h
Byte (8-bit)
ALM
CPA3_REVERSE_ROT_F
ALM_CPA3_REVERSE_ROT_F
DI
18
(0012)h
Byte (8-bit)
ALM
CPB1_REVERSE_ROT_F
ALM_CPB1_REVERSE_ROT_F
DI
20
(0014)h
Byte (8-bit)
ALM
CPB2_REVERSE_ROT_F
ALM_CPB2_REVERSE_ROT_F
DI
21
(0015)h
Byte (8-bit)
ALM
LOSS_COM_MS_F
ALM_LOSS_COM_MS_F
DI
30
(001E)h
Byte (8-bit)
ALM
CCN_EMSTOP_F
CCN_EMSTOP_F
DI
31
(001F)h
Byte (8-bit)
ALM
COOL_PUMP1_F
COOL_PUMP1_F
DI
32
(0020)h
Byte (8-bit)
ALM
COOL_PUMP2_F
COOL_PUMP2_F
DI
33
(0021)h
Byte (8-bit)
ALM
REPEATED_HI_DGT_A_F
REPEATED_HIGH_DGT_A_F
DI
37
(0025)h
Byte (8-bit)
ALM
REPEATED_HI_DGT_B_F
REPEATED_HIGH_DGT_B_F
DI
38
(0026)h
Byte (8-bit)
ALM
REPEATED_LO_SST_A_F
REPEATED_LOW_SST_A_F
DI
40
(0028)h
Byte (8-bit)
ALM
REPEATED_LO_SST_B_F
REPEATED_LOW_SST_B_F
DI
41
(0029)h
Byte (8-bit)
ALM
HEAT_LOW_EWT_F
HEAT_LOW_EWT_F
DI
43
(002B)h
Byte (8-bit)
ALM
HP_SWITCH_A_F
HP_SWITCH_A_F
DI
63
(003F)h
Byte (8-bit)
ALM
HP_SWITCH_B_F
HP_SWITCH_B_F
DI
64
(0040)h
Byte (8-bit)
ALM
SENSORS_SWAP_F
SENSORS_SWAP_F
DI
97
Byte (8-bit)

ECG-UG-16-006
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Modbus
Rev A
1/13/17
7 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
(0061)h
ALM
LOSS_COM_SM_F
ALM_LOSS_COM_SM_F
DI
29
(001D)h
Byte (8-bit)
ALM
FLUIDE_FAIL
FLUIDE_FAIL
DI
99
(0063)h
Byte (8-bit)
ALM
FC_PROCESS_F
FC_PROCESS_F
DI
101
(0065)h
Byte (8-bit)
ALM
WL_PRESS_Z_ERROR_F
WL_PRESS_ZERO_ERROR_F
DI
1202
(04B2)h
Byte (8-bit)
ALM
WL_PRESS_TOO_LOW_F
WL_PRESS_TOO_LOW_F
DI
1203
(04B3)h
Byte (8-bit)
ALM
WL_PUMP_NO_START_F
WL_PUMP_NOT_STARTED_F
DI
1204
(04B4)h
Byte (8-bit)
ALM
WL_PRESS_ERR_RTST_F
WL_PRESS_ERROR_IN_RUNTEST_F
DI
1205
(04B5)h
Byte (8-bit)
ALM
WL_PUMP_OVERLOAD_F
WL_PUMP_OVERLOAD_F
DI
1206
(04B6)h
Byte (8-bit)
ALM
WL_LOW_FLOW_F
WL_LOW_FLOW_F
DI
1207
(04B7)h
Byte (8-bit)
ALM
WL_PRESS_CROSS_F
WL_PRESS_CROSS_F
DI
1208
(04B8)h
Byte (8-bit)
ALM
WL_LOW_PRESS_WARN_F
WL_LOW_PRESS_WARNING_F
DI
1209
(04B9)h
Byte (8-bit)
ALM
DP_A_F
ALM_DP_A_F
DI
2001
(07D1)h
Byte (8-bit)
ALM
DP_B_F
ALM_DP_B_F
DI
2002
(07D2)h
Byte (8-bit)
ALM
SP_A_F
ALM_SP_A_F
DI
2004
(07D4)h
Byte (8-bit)
ALM
SP_B_F
ALM_SP_B_F
DI
2005
(07D5)h
Byte (8-bit)
ALM
WP_IN_F
WP_IN_F
DI
2024
(07E8)h
Byte (8-bit)
ALM
WP_OUT_F
WP_OUT_F
DI
2025
(07E9)h
Byte (8-bit)
ALM
SERVICE_MAINT_ALERT
SERVICE_MAINTNANCE_ALERT
DI
3000
(0BB8)h
Byte (8-bit)
ALM
FGAS_NEEDED
FGAS_NEEDED
DI
3005
(0BBD)h
Byte (8-bit)
ALM
SIOB_A_LOW_VOLT_F
SIOB_LOW_VOLT_CIRA_F
DI
4001
(0FA1)h
Byte (8-bit)
ALM
SIOB_B_LOW_VOLT_F
SIOB_LOW_VOLT_CIRB_F
DI
4002
(0FA2)h
Byte (8-bit)
ALM
SIOB_CIR_A_COM_F
ALM_SIOB_CIR_A_COM_F
DI
4901
(1325)h
Byte (8-bit)
ALM
SIOB_CIR_B_COM_F
ALM_SIOB_CIR_B_COM_F
DI
4902
(1326)h
Byte (8-bit)
ALM
AUX1_COM_F
ALM_AUX1_COM_F
DI
4601
(11F9)h
Byte (8-bit)
ALM
FC_AUX1_COM_F
FC_AUX1_COM_F
DI
4602
(11FA)h
Byte (8-bit)

ECG-UG-16-006
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Modbus
Rev A
1/13/17
8 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
ALM
COOL_EWT_F
ALM_COOL_EWT_F
DI
5001
(1389)h
Byte (8-bit)
ALM
COOL_LWT_F
ALM_COOL_LWT_F
DI
5002
(138A)h
Byte (8-bit)
ALM
DEFROST_T_A_F
ALM_DEFROST_T_A_F
DI
5003
(138B)h
Byte (8-bit)
ALM
DEFROST_T_B_F
ALM_DEFROST_T_B_F
DI
5004
(138C)h
Byte (8-bit)
ALM
OAT_F
ALM_OAT_F
DI
5010
(1392)h
Byte (8-bit)
ALM
CHWSTEMP_F
ALM_CHWSTEMP_F
DI
5011
(1393)h
Byte (8-bit)
ALM
SUCTION_T_A_F
ALM_SUCTION_T_A_F
DI
5012
(1394)h
Byte (8-bit)
ALM
SUCTION_T_B_F
ALM_SUCTION_T_B_F
DI
5013
(1395)h
Byte (8-bit)
ALM
SGTC1_F
ALM_SGTC1_F
DI
5044
(13B4)h
Byte (8-bit)
ALM
SGTC2_F
ALM_SGTC2_F
DI
5045
(13B5)h
Byte (8-bit)
ALM
FC_WLOOP_F
FC_WLOOP_F
DI
5046
(13B6)h
Byte (8-bit)
ALM
FC_LWT_F
FC_LWT_F
DI
5047
(13B7)h
Byte (8-bit)
ALM
FC_OAT_F
FC_OAT_F
DI
5048
(13B8)h
Byte (8-bit)
ALM
DRV_FAN_A_F
DRV_FAN_A_F
DI
7001
(1B59)h
Byte (8-bit)
ALM
DRV_FAN_B_F
DRV_FAN_B_F
DI
7002
(1B5A)h
Byte (8-bit)
ALM
DRV_WTR_PUMP_F
DRV_WTR_PUMP_F
DI
7003
(1B5B)h
Byte (8-bit)
ALM
ILL_FACT_CONF_F
ILL_FACT_CONF_F
DI
8001
(1F41)h
Byte (8-bit)
ALM
INI_FACT_CONF_F
INI_FACT_CONF_F
DI
8000
(1F40)h
Byte (8-bit)
ALM
M_S_CONFIG_F
M_S_CONFIG_F
DI
8101
(1FA5)h
Byte (8-bit)
PROTOCOL
SP_OCC
Setpoint Occupied?
HR
0
(0000)h
Signed Integer
(32-bit)
PROTOCOL
CHIL_S_S
Net.: Cmd Start/Stop
HR
2
(0002)h
Signed Integer
(32-bit)
PROTOCOL
CHIL_OCC
Chiller occupied?
HR
4
(0004)h
Signed Integer
(32-bit)
PROTOCOL
EMSTOP
Emergency Stop
HR
6
(0006)h
Signed Integer
(32-bit)
PROTOCOL
HC_SEL
Heatcool Select
HR
8
(0008)h
Signed Integer
(32-bit)
PROTOCOL
SP_SEL
Setpoint Select
HR
10
(000A)h
Signed Integer
(32-bit)
PROTOCOL
DEM_LIM
Demand Limit
HR
12
Signed Integer

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Modbus
Rev A
1/13/17
9 OF 20
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Table
Item
Description
Media
Type
Address
(hex)
Format
(000C)h
(32-bit)
PROTOCOL
CTRL_PNT
Control Point
HR
14
(000E)h
IEEE Float
(32-bit)
HCCONFIG
cr_sel
Cooling Reset Select
HR
18
(0012)h
Signed Integer
(32-bit)
HCCONFIG
hr_sel
Heating Reset Select
HR
20
(0014)h
Signed Integer
(32-bit)
RESETCFG
oatcr_no
OAT No Reset Value
HR
22
(0016)h
IEEE Float
(32-bit)
RESETCFG
oatcr_fu
OAT Full Reset Value
HR
24
(0018)h
IEEE Float
(32-bit)
RESETCFG
dt_cr_no
Delta T No Reset Value
HR
26
(001A)h
IEEE Float
(32-bit)
RESETCFG
dt_cr_fu
Delta T Full Reset Value
HR
28
(001C)h
IEEE Float
(32-bit)
RESETCFG
cr_deg
Cooling Reset Deg. Value
HR
30
(001E)h
IEEE Float
(32-bit)
RESETCFG
oathr_no
OAT No Reset Value
HR
32
(0020)h
IEEE Float
(32-bit)
RESETCFG
oathr_fu
OAT Full Reset Value
HR
34
(0022)h
IEEE Float
(32-bit)
RESETCFG
dt_hr_no
Delta T No Reset Value
HR
36
(0024)h
IEEE Float
(32-bit)
RESETCFG
dt_hr_fu
Delta T Full Reset Value
HR
38
(0026)h
IEEE Float
(32-bit)
RESETCFG
hr_deg
Heating Reset Deg. Value
HR
40
(0028)h
IEEE Float
(32-bit)
CP_UNABL
un_cp_a1
Compressor A1 Disable
HR
60
(003C)h
Signed Integer
(32-bit)
CP_UNABL
un_cp_a2
Compressor A2 Disable
HR
62
(003E)h
Signed Integer
(32-bit)
CP_UNABL
un_cp_a3
Compressor A3 Disable
HR
64
(0040)h
Signed Integer
(32-bit)
CP_UNABL
un_cp_b1
Compressor B1 Disable
HR
68
(0044)h
Signed Integer
(32-bit)
CP_UNABL
un_cp_b2
Compressor B2 Disable
HR
70
(0046)h
Signed Integer
(32-bit)
SETPOINT
csp1
Cooling Setpoint 1
HR
76
(004C)h
IEEE Float
(32-bit)
SETPOINT
csp2
Cooling Setpoint 2
HR
78
(004E)h
IEEE Float
(32-bit)
SETPOINT
hsp1
Heating Setpoint 1
HR
80
(0050)h
IEEE Float
(32-bit)
SETPOINT
hsp2
Heating Setpoint 2
HR
82
(0052)h
IEEE Float
(32-bit)
SETPOINT
ramp_sp
Ramp Loading
HR
84
(0054)h
IEEE Float
(32-bit)
SETPOINT
cauto_sp
Cool Changeover Setpt
HR
86
(0056)h
IEEE Float
(32-bit)
SETPOINT
hauto_sp
Heat Changeover Setpt
HR
88
(0058)h
IEEE Float
(32-bit)

ECG-UG-16-006
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Modbus
Rev A
1/13/17
10 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
SETPOINT
lim_sp1
Switch Limit Setpoint 1
HR
90
(005A)h
Signed Integer
(32-bit)
SETPOINT
lim_sp2
Switch Limit Setpoint 2
HR
92
(005C)h
Signed Integer
(32-bit)
SETPOINT
lim_sp3
Switch Limit Setpoint 3
HR
94
(005E)h
Signed Integer
(32-bit)
SETPOINT
min_sct
Desuperheater Min Sct
HR
96
(0060)h
IEEE Float
(32-bit)
MODBUSRS
metric
Metric Unit
HR
106
(006A)h
Signed Integer
(32-bit)
MODBUSRS
swap_b
Swap Bytes
HR
108
(006C)h
Signed Integer
(32-bit)
MODBUSRS
real_typ
Real type management
HR
110
(006E)h
Signed Integer
(32-bit)
MODBUSIP
metric
Metric Unit
HR
112
(0070)h
Signed Integer
(32-bit)
MODBUSIP
swap_b
Swap Bytes
HR
114
(0072)h
Signed Integer
(32-bit)
MODBUSIP
real_typ
Real type management
HR
116
(0074)h
Signed Integer
(32-bit)
GENUNIT
SP_OCC
Setpoint Occupied?
IR
0
(0000)h
Signed Integer
(32-bit)
GENUNIT
CHIL_S_S
Net.: Cmd Start/Stop
IR
2
(0002)h
Signed Integer
(32-bit)
GENUNIT
CHIL_OCC
Net.: Cmd Occupied
IR
4
(0004)h
Signed Integer
(32-bit)
GENUNIT
EMSTOP
Emergency Stop
IR
6
(0006)h
Signed Integer
(32-bit)
GENUNIT
CTRL_TYP
Local=0 Net.=1 Remote=2
IR
8
(0008)h
Signed Integer
(32-bit)
GENUNIT
STATUS
Running Status
IR
10
(000A)h
Signed Integer
(32-bit)
GENUNIT
min_left
Minutes Left for Start
IR
12
(000C)h
IEEE Float
(32-bit)
GENUNIT
HEATCOOL
Heat/Cool status
IR
14
(000E)h
Signed Integer
(32-bit)
GENUNIT
SP_SEL
Setpoint Select
IR
16
(0010)h
Signed Integer
(32-bit)
GENUNIT
CAP_T
Percent Total Capacity
IR
18
(0012)h
Signed Integer
(32-bit)
GENUNIT
CAPA_T
Circuit A Total Capacity
IR
20
(0014)h
Signed Integer
(32-bit)
GENUNIT
CAPB_T
Circuit B Total Capacity
IR
22
(0016)h
Signed Integer
(32-bit)
GENUNIT
DEM_LIM
Active Demand Limit Val
IR
24
(0018)h
Signed Integer
(32-bit)
GENUNIT
SP
Current Setpoint
IR
26
(001A)h
IEEE Float
(32-bit)
GENUNIT
CTRL_PNT
Control Point
IR
28
(001C)h
IEEE Float
(32-bit)
GENUNIT
ALM
Alarm State
IR
30
Signed Integer

ECG-UG-16-006
REVISION
DATE
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AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
11 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
(001E)h
(32-bit)
MODBUSRS
modrt_en
RTU Server Enable
IR
32
(0020)h
Signed Integer
(32-bit)
MODBUSRS
ser_UID
Server UID
IR
34
(0022)h
Signed Integer
(32-bit)
MODBUSRS
baudrate
Baudrate
IR
40
(0028)h
Signed Integer
(32-bit)
MODBUSRS
parity
Parity
IR
42
(002A)h
Signed Integer
(32-bit)
MODBUSRS
stop_bit
Stop bit
IR
44
(002C)h
Signed Integer
(32-bit)
TEMP
EWT
Entering Water Temp
IR
48
(0030)h
IEEE Float
(32-bit)
TEMP
LWT
Leaving Water Temp
IR
50
(0032)h
IEEE Float
(32-bit)
TEMP
OAT
External Temperature
IR
52
(0034)h
IEEE Float
(32-bit)
TEMP
CHWSTEMP
Common Master/Slave Temp
IR
54
(0036)h
IEEE Float
(32-bit)
TEMP
SCT_A
Saturated Cond Tmp A
IR
56
(0038)h
IEEE Float
(32-bit)
TEMP
SST_A
Saturated Suction Tmp A
IR
58
(003A)h
IEEE Float
(32-bit)
TEMP
SCT_B
Saturated Cond Tmp B
IR
60
(003C)h
IEEE Float
(32-bit)
TEMP
SST_B
Saturated Suction Tmp B
IR
62
(003E)h
IEEE Float
(32-bit)
TEMP
DEFRT_A
Defrost Temp Cir A
IR
64
(0040)h
IEEE Float
(32-bit)
TEMP
DEFRT_2
Defrost Temp Second Coil
IR
66
(0042)h
IEEE Float
(32-bit)
LOADFACT
SUCT_T_A
Suction Gas Temp A
IR
68
(0044)h
IEEE Float
(32-bit)
LOADFACT
SUCT_T_B
Suction Gas Temp B
IR
70
(0046)h
IEEE Float
(32-bit)
LOADFACT
SH_A
Suction Superheat A
IR
72
(0048)h
IEEE Float
(32-bit)
LOADFACT
SH_B
Suction Superheat B
IR
74
(004A)h
IEEE Float
(32-bit)
TEMP
sgtc1
Suction Gas Temp Coil 1
IR
88
(0058)h
IEEE Float
(32-bit)
TEMP
sgtc2
Suction Gas Temp Coil 2
IR
90
(005A)h
IEEE Float
(32-bit)
PRESSURE
DP_A
Discharge Pressure A
IR
94
(005E)h
IEEE Float
(32-bit)
PRESSURE
SP_A
Suction Pressure A
IR
96
(0060)h
IEEE Float
(32-bit)
PRESSURE
DP_B
Discharge Pressure B
IR
98
(0062)h
IEEE Float
(32-bit)
PRESSURE
SP_B
Suction Pressure B
IR
100
(0064)h
IEEE Float
(32-bit)

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
12 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
PRESSURE
wtr_in
Pressure Water In
IR
102
(0066)h
IEEE Float
(32-bit)
PRESSURE
wtr_out
Pressure Water Out
IR
104
(0068)h
IEEE Float
(32-bit)
INPUTS
ONOFF_SW
Remote On/Off Switch
IR
106
(006A)h
Signed Integer
(32-bit)
INPUTS
HC_SW
Remote Heat/Cool Switch
IR
108
(006C)h
Signed Integer
(32-bit)
INPUTS
SETP_SW
Remote Setpoint Switch
IR
112
(0070)h
Signed Integer
(32-bit)
INPUTS
LIM_SW1
Limit Switch 1
IR
114
(0072)h
Signed Integer
(32-bit)
INPUTS
LIM_SW2
Limit Switch 2
IR
116
(0074)h
Signed Integer
(32-bit)
INPUTS
FLOW_SW
Cooler Flow Switch
IR
118
(0076)h
Signed Integer
(32-bit)
INPUTS
DSHT_SW
Desuperheater Switch
IR
124
(007C)h
Signed Integer
(32-bit)
OUTPUTS
HD_POS_A
Head Pressure Position A
IR
156
(009C)h
Signed Integer
(32-bit)
OUTPUTS
HD_POS_B
Head Pressure Position B
IR
158
(009E)h
Signed Integer
(32-bit)
OUTPUTS
EXVPosA
EXV Position Circuit A
IR
160
(00A0)h
IEEE Float
(32-bit)
OUTPUTS
EXVPosB
EXV Position Circuit B
IR
162
(00A2)h
IEEE Float
(32-bit)
OUTPUTS
RV_A
4 Way Refrigerant ValveA
IR
168
(00A8)h
Signed Integer
(32-bit)
OUTPUTS
RV_B
4 Way Refrigerant ValveB
IR
170
(00AA)h
Signed Integer
(32-bit)
OUTPUTS
BOILER
Boiler Command
IR
176
(00B0)h
Signed Integer
(32-bit)
OUTPUTS
EHS_STEP
Electrical Heat Stage
IR
178
(00B2)h
Signed Integer
(32-bit)
OUTPUTS
CP_A1
Compressor A1 Output
IR
182
(00B6)h
Signed Integer
(32-bit)
OUTPUTS
CP_A2
Compressor A2 Output
IR
184
(00B8)h
Signed Integer
(32-bit)
OUTPUTS
CP_A3
Compressor A3 Output
IR
186
(00BA)h
Signed Integer
(32-bit)
OUTPUTS
CP_B1
Compressor B1 Output
IR
190
(00BE)h
Signed Integer
(32-bit)
OUTPUTS
CP_B2
Compressor B2 Output
IR
192
(00C0)h
Signed Integer
(32-bit)
OUTPUTS
FAN_A1LS
Fan A1LS Output
IR
198
(00C6)h
Signed Integer
(32-bit)
OUTPUTS
FAN_A1HS
Fan A1HS Output
IR
200
(00C8)h
Signed Integer
(32-bit)
OUTPUTS
FAN_A2LS
Fan A2LS Output
IR
202
(00CA)h
Signed Integer
(32-bit)
OUTPUTS
FAN_A2HS
Fan A2HS Output
IR
204
Signed Integer

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
13 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
(00CC)h
(32-bit)
OUTPUTS
FAN_B1LS
Fan B1LS Output
IR
212
(00D4)h
Signed Integer
(32-bit)
OUTPUTS
FAN_B1HS
Fan B1HS Output
IR
214
(00D6)h
Signed Integer
(32-bit)
OUTPUTS
ALARM_R
Alarm Relay Status
IR
222
(00DE)h
Signed Integer
(32-bit)
OUTPUTS
RUN_R
Running Status
IR
224
(00E0)h
Signed Integer
(32-bit)
PUMPSTAT
CPUMP_1
Water Pump #1 Command
IR
240
(00F0)h
Signed Integer
(32-bit)
PUMPSTAT
CPUMP_2
Water Pump #2 Command
IR
242
(00F2)h
Signed Integer
(32-bit)
PUMPSTAT
W_P_IN
Inlet Water Pressure
IR
250
(00FA)h
IEEE Float
(32-bit)
PUMPSTAT
W_P_OUT
Outlet Water Pressure
IR
252
(00FC)h
IEEE Float
(32-bit)
PUMPSTAT
WAT_FLOW
Water Flow
IR
268
(010C)h
IEEE Float
(32-bit)
PUMPSTAT
CAPPOWER
Actual Power Capacity
IR
274
(0112)h
IEEE Float
(32-bit)
PUMPSTAT
drvp_pct
Pump Drive Percent
IR
280
(0118)h
IEEE Float
(32-bit)
RUNTIME
hr_mach
Machine Operating Hours
IR
294
(0126)h
IEEE Float
(32-bit)
RUNTIME
st_mach
Machine Starts Number
IR
296
(0128)h
IEEE Float
(32-bit)
RUNTIME
hr_cp_a1
Compressor A1 Hours
IR
298
(012A)h
IEEE Float
(32-bit)
RUNTIME
hr_cp_a2
Compressor A2 Hours
IR
300
(012C)h
IEEE Float
(32-bit)
RUNTIME
hr_cp_a3
Compressor A3 Hours
IR
302
(012E)h
IEEE Float
(32-bit)
RUNTIME
hr_cp_b1
Compressor B1 Hours
IR
306
(0132)h
IEEE Float
(32-bit)
RUNTIME
hr_cp_b2
Compressor B2 Hours
IR
308
(0134)h
IEEE Float
(32-bit)
RUNTIME
st_cp_a1
Compressor A1 Starts
IR
314
(013A)h
IEEE Float
(32-bit)
RUNTIME
st_cp_a2
Compressor A2 Starts
IR
316
(013C)h
IEEE Float
(32-bit)
RUNTIME
st_cp_a3
Compressor A3 Starts
IR
318
(013E)h
IEEE Float
(32-bit)
RUNTIME
st_cp_b1
Compressor B1 Starts
IR
322
(0142)h
IEEE Float
(32-bit)
RUNTIME
st_cp_b2
Compressor B2 Starts
IR
324
(0144)h
IEEE Float
(32-bit)
RUNTIME
hr_cpum1
Water Pump #1 Hours
IR
330
(014A)h
IEEE Float
(32-bit)
RUNTIME
hr_cpum2
Water Pump #2 Hours
IR
332
(014C)h
IEEE Float
(32-bit)

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
14 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
RUNTIME
hr_fana1
Circuit A Fan #1 Hours
IR
338
(0152)h
IEEE Float
(32-bit)
RUNTIME
hr_fana2
Circuit A Fan #2 Hours
IR
340
(0154)h
IEEE Float
(32-bit)
RUNTIME
hr_fanb1
Circuit B Fan #1 Hours
IR
346
(015A)h
IEEE Float
(32-bit)
RUNTIME
st_fana1
Circuit A Fan #1 Starts
IR
354
(0162)h
IEEE Float
(32-bit)
RUNTIME
st_fana2
Circuit A Fan #2 Starts
IR
356
(0164)h
IEEE Float
(32-bit)
RUNTIME
st_fanb1
Circuit B Fan #1 Starts
IR
358
(0166)h
IEEE Float
(32-bit)
MODES
m_limit
Demand Limit Active
IR
370
(0172)h
Signed Integer
(32-bit)
MODES
m_heater
Electric Heat Active
IR
388
(0184)h
Signed Integer
(32-bit)
GENCONF
lead_cir
Cir Priority Sequence
IR
428
(01AC)h
Signed Integer
(32-bit)
GENCONF
off_on_d
Unit Off to On Delay
IR
434
(01B2)h
Signed Integer
(32-bit)
GENCONF
nh_limit
Night Capacity Limit
IR
436
(01B4)h
Signed Integer
(32-bit)
GENCONF
nh_start
Night Mode Start Hour
IR
438
(01B6)h
Signed Integer
(32-bit)
GENCONF
nh_end
Night Mode End Hour
IR
440
(01B8)h
Signed Integer
(32-bit)
HCCONFIG
both_sel
HSM Both Command Select
IR
448
(01C0)h
Signed Integer
(32-bit)
HCCONFIG
auto_sel
Auto Changeover Select
IR
450
(01C2)h
Signed Integer
(32-bit)
HCCONFIG
heat_th
Heating OAT Threshold
IR
454
(01C6)h
IEEE Float
(32-bit)
PUMPCONF
pump_seq
Cooler Pumps Sequence
IR
456
(01C8)h
Signed Integer
(32-bit)
HCCONFIG
boil_th
Boiler OAT Threshold
IR
472
(01D8)h
IEEE Float
(32-bit)
HCCONFIG
ehs_th
Elec Stage OAT Threshold
IR
474
(01DA)h
IEEE Float
(32-bit)
FACTORY
unit_typ
Unit Type (HeatPump = 2)
IR
484
(01E4)h
Signed Integer
(32-bit)
FACTORY
unitsize
Unit Capacity Model
IR
486
(01E6)h
Signed Integer
(32-bit)
FACTORY
ehs_sel
Electrical Heater Select
IR
492
(01EC)h
Signed Integer
(32-bit)
FACTORY
boil_sel
Boiler Command Select
IR
494
(01EE)h
Signed Integer
(32-bit)
FACTORY
vsd_fan
Var Speed Fan Selection
IR
502
(01F6)h
Signed Integer
(32-bit)
FACTORY
dual_pmp
Factory Dual Water Pump
IR
508
(01FC)h
Signed Integer
(32-bit)
FACTORY
vsd_pump
Var Speed Water Pump Sel
IR
510
Signed Integer

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
15 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
(01FE)h
(32-bit)
FACTORY
leak_chk
Leakage Charge Detection
IR
514
(0202)h
Signed Integer
(32-bit)
FACTORY
fc_sel
DC Free Cooling Select
IR
530
(0212)h
Signed Integer
(32-bit)
MAINTCFG
s_alert
Servicing Alert
IR
540
(021C)h
Signed Integer
(32-bit)
MAINTCFG
charge_c
Refrigerant Charge Ctrl
IR
542
(021E)h
Signed Integer
(32-bit)
MST_SLV
ms_sel
Master/Slave Select :
IR
554
(022A)h
Signed Integer
(32-bit)
MST_SLV
ms_ctrl
Master Control Type :
IR
556
(022C)h
Signed Integer
(32-bit)
MST_SLV
slv_addr
Slave Address
IR
558
(022E)h
Signed Integer
(32-bit)
MST_SLV
lag_mini
Lag Minimum Running Time
IR
562
(0232)h
Signed Integer
(32-bit)
MST_SLV
lag_pump
Lag Unit Pump Control
IR
570
(023A)h
Signed Integer
(32-bit)
MST_SLV
ll_serie
Chiller In Series
IR
574
(023E)h
Signed Integer
(32-bit)
MSTSLAVE
ms_activ
Master/Slave Ctrl Active
IR
578
(0242)h
Signed Integer
(32-bit)
MSTSLAVE
lead_sel
Lead Unit is the:
IR
580
(0244)h
Signed Integer
(32-bit)
MSTSLAVE
slv_stat
Slave Chiller State
IR
582
(0246)h
Signed Integer
(32-bit)
MSTSLAVE
slv_capt
Slave Chiller Total Cap
IR
584
(0248)h
Signed Integer
(32-bit)
MSTSLAVE
ms_error
Master/Slave Error
IR
594
(0252)h
Signed Integer
(32-bit)
MSTSLAVE
cap_max
Max Available Capacity ?
IR
596
(0254)h
Signed Integer
(32-bit)
MSTSLAVE
slav_ewt
Slave Cooler Ent. Fluid
IR
602
(025A)h
IEEE Float
(32-bit)
MSTSLAVE
slav_lwt
Slave Cooler Leav. Fluid
IR
604
(025C)h
IEEE Float
(32-bit)
FACTORY
flui_typ
Cooler Fluid Type
IR
606
(025E)h
Signed Integer
(32-bit)
SERVICE1
ewt_opt
Entering Fluid Control
IR
608
(0260)h
Signed Integer
(32-bit)
SERVICE1
hd_pg
Prop PID Gain Varifan
IR
610
(0262)h
IEEE Float
(32-bit)
SERVICE1
hd_ig
Int PID Gain Varifan
IR
612
(0264)h
IEEE Float
(32-bit)
SERVICE1
hd_dg
Deri PID Gain Varifan
IR
614
(0266)h
IEEE Float
(32-bit)
SERVICE1
hp_th
High Pressure Threshold
IR
622
(026E)h
IEEE Float
(32-bit)
SERVICE1
heatersp
Cooler Heater Delta Spt
IR
624
(0270)h
IEEE Float
(32-bit)

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
16 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
SERVICE1
freezesp
Brine Freeze Setpoint
IR
628
(0274)h
IEEE Float
(32-bit)
SERVICE1
min_lwt
Brine Minimum LWT
IR
630
(0276)h
IEEE Float
(32-bit)
SERVICE1
zm_spt
Auto Z Multiplier Setpt
IR
634
(027A)h
Signed Integer
(32-bit)
LOADFACT
ctrl_avg
Average Ctrl Water Temp
IR
720
(02D0)h
IEEE Float
(32-bit)
LOADFACT
diff_wt
Differential Water Temp
IR
722
(02D2)h
IEEE Float
(32-bit)
LOADFACT
delta_t
Water Delta T
IR
724
(02D4)h
IEEE Float
(32-bit)
DRV_CTRL
sct_sp_a
Cir A SCT Control Point
IR
818
(0332)h
IEEE Float
(32-bit)
DRV_CTRL
drva_pwr
Cir A Fan Drive Power
IR
820
(0334)h
IEEE Float
(32-bit)
DRV_CTRL
drva_i
Cir A Fan Drive Amps
IR
822
(0336)h
IEEE Float
(32-bit)
DRV_CTRL
drva_ver
Cir A Fan Drive Version
IR
824
(0338)h
Signed Integer
(32-bit)
DRV_CTRL
sct_sp_b
Cir B SCT Control Point
IR
826
(033A)h
IEEE Float
(32-bit)
DRV_CTRL
drvb_pwr
Cir B Fan Drive Power
IR
828
(033C)h
IEEE Float
(32-bit)
DRV_CTRL
drvb_i
Cir B Fan Drive Amps
IR
830
(033E)h
IEEE Float
(32-bit)
DRV_CTRL
drvb_ver
Cir B Fan Drive Version
IR
832
(0340)h
Signed Integer
(32-bit)
DRV_CTRL
SET_DRV
Attach LEN Drive
IR
834
(0342)h
Signed Integer
(32-bit)
DEFROSTM
frost_a
Exchanger Frost FactorA
IR
836
(0344)h
Signed Integer
(32-bit)
DEFROSTM
def_se_a
Next Sequence Allowed in
IR
838
(0346)h
Signed Integer
(32-bit)
DEFROSTM
mode19
Defrost Active?
IR
840
(0348)h
Signed Integer
(32-bit)
DEFROSTM
DEFRT_A
Defrost Temperature
IR
842
(034A)h
IEEE Float
(32-bit)
DEFROSTM
defr_dua
DefrostDuration A
IR
844
(034C)h
IEEE Float
(32-bit)
DEFROSTM
def_fa_a
Fan Sequence Started?
IR
846
(034E)h
Signed Integer
(32-bit)
DEFROSTM
over_d_a
Override State
IR
848
(0350)h
Signed Integer
(32-bit)
DEFROSTM
sst_dm_a
Mean SST Calculation
IR
850
(0352)h
IEEE Float
(32-bit)
DEFROSTM
delt_a
Delta: OAT - Mean SST
IR
852
(0354)h
IEEE Float
(32-bit)
DEFROSTM
delt_r_a
Reference Delta
IR
854
(0356)h
IEEE Float
(32-bit)
DEFROSTM
delt_v_a
Delta - Reference Delta
IR
856
IEEE Float

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
17 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
(0358)h
(32-bit)
DEFROSTM
fr_int_a
Frost Integrator Gain
IR
858
(035A)h
IEEE Float
(32-bit)
DEFROSTM
def_ca_a
Defrost Fan Start Cal A
IR
860
(035C)h
IEEE Float
(32-bit)
DEFROSTM
def_of_a
Defrost Fan Offset Cal A
IR
862
(035E)h
IEEE Float
(32-bit)
DEFROSTM
frost_b
Exchanger Frost FactorB
IR
864
(0360)h
Signed Integer
(32-bit)
DEFROSTM
def_se_b
Next Sequence Allowed in
IR
866
(0362)h
Signed Integer
(32-bit)
DEFROSTM
mode20
Defrost Active?
IR
868
(0364)h
Signed Integer
(32-bit)
DEFROSTM
DEFRT_2
Defrost Temp second Coil
IR
870
(0366)h
IEEE Float
(32-bit)
DEFROSTM
defr_dub
DefrostDuration B
IR
872
(0368)h
IEEE Float
(32-bit)
DEFROSTM
def_fa_b
Fan Sequence Started?
IR
874
(036A)h
Signed Integer
(32-bit)
DEFROSTM
over_d_b
Override State
IR
876
(036C)h
Signed Integer
(32-bit)
DEFROSTM
sst_dm_b
Mean SST Calculation
IR
878
(036E)h
IEEE Float
(32-bit)
DEFROSTM
delt_b
Delta: OAT - Mean SST
IR
880
(0370)h
IEEE Float
(32-bit)
DEFROSTM
delt_r_b
Reference Delta
IR
882
(0372)h
IEEE Float
(32-bit)
DEFROSTM
delt_v_b
Delta - Reference Delta
IR
884
(0374)h
IEEE Float
(32-bit)
DEFROSTM
fr_int_b
Frost Integrator Gain
IR
886
(0376)h
IEEE Float
(32-bit)
DEFROSTM
def_ca_b
Defrost Fan Start Cal B
IR
888
(0378)h
IEEE Float
(32-bit)
DEFROSTM
def_of_b
Defrost Fan Offset Cal B
IR
890
(037A)h
IEEE Float
(32-bit)
LAST_POR
date_on1
Power On 1 :day-mon-year
IR
892
(037C)h
IEEE Float
(32-bit)
LAST_POR
time_on1
Power On 1 :hour-minute
IR
894
(037E)h
IEEE Float
(32-bit)
LAST_POR
date_of1
PowerDown 1:day-mon-year
IR
896
(0380)h
IEEE Float
(32-bit)
LAST_POR
time_of1
PowerDown 1:hour-minute
IR
898
(0382)h
IEEE Float
(32-bit)
LAST_POR
date_on2
Power On 2 :day-mon-year
IR
900
(0384)h
IEEE Float
(32-bit)
LAST_POR
time_on2
Power On 2 :hour-minute
IR
902
(0386)h
IEEE Float
(32-bit)
LAST_POR
date_of2
PowerDown 2:day-mon-year
IR
904
(0388)h
IEEE Float
(32-bit)
LAST_POR
time_of2
PowerDown 2:hour-minute
IR
906
(038A)h
IEEE Float
(32-bit)

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
18 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
LAST_POR
date_on3
Power On 3 :day-mon-year
IR
908
(038C)h
IEEE Float
(32-bit)
LAST_POR
time_on3
Power On 3 :hour-minute
IR
910
(038E)h
IEEE Float
(32-bit)
LAST_POR
date_of3
PowerDown 3:day-mon-year
IR
912
(0390)h
IEEE Float
(32-bit)
LAST_POR
time_of3
PowerDown 3:hour-minute
IR
914
(0392)h
IEEE Float
(32-bit)
LAST_POR
date_on4
Power On 4 :day-mon-year
IR
916
(0394)h
IEEE Float
(32-bit)
LAST_POR
time_on4
Power On 4 :hour-minute
IR
918
(0396)h
IEEE Float
(32-bit)
LAST_POR
date_of4
PowerDown 4:day-mon-year
IR
920
(0398)h
IEEE Float
(32-bit)
LAST_POR
time_of4
PowerDown 4:hour-minute
IR
922
(039A)h
IEEE Float
(32-bit)
LAST_POR
date_on5
Power On 5 :day-mon-year
IR
924
(039C)h
IEEE Float
(32-bit)
LAST_POR
time_on5
Power On 5 :hour-minute
IR
926
(039E)h
IEEE Float
(32-bit)
LAST_POR
date_of5
PowerDown 5:day-mon-year
IR
928
(03A0)h
IEEE Float
(32-bit)
LAST_POR
time_of5
PowerDown 5:hour-minute
IR
930
(03A2)h
IEEE Float
(32-bit)
PR_LIMIT
sdt_m_a
Discharge A Temp Average
IR
932
(03A4)h
IEEE Float
(32-bit)
PR_LIMIT
sdtlim_a
Discharge A Gas Limit
IR
934
(03A6)h
IEEE Float
(32-bit)
PR_LIMIT
sst_m_a
Suction A Temp Average
IR
936
(03A8)h
IEEE Float
(32-bit)
PR_LIMIT
sdt_m2_a
Discharge A Tp Average 2
IR
938
(03AA)h
IEEE Float
(32-bit)
PR_LIMIT
sdtlim2a
Discharge A Temp Limit2
IR
940
(03AC)h
IEEE Float
(32-bit)
PR_LIMIT
sdt_m_b
Discharge B Temp Average
IR
942
(03AE)h
IEEE Float
(32-bit)
PR_LIMIT
sdtlim_b
Discharge B Gas Limit
IR
944
(03B0)h
IEEE Float
(32-bit)
PR_LIMIT
sst_m_b
Suction B Temp Average
IR
946
(03B2)h
IEEE Float
(32-bit)
PR_LIMIT
sdt_m2_b
Discharge B Tp Average 2
IR
948
(03B4)h
IEEE Float
(32-bit)
PR_LIMIT
sdtlim2b
Discharge B Temp Limit2
IR
950
(03B6)h
IEEE Float
(32-bit)
SERMAINT
S_RESET
Reset Maintenance Alert
IR
952
(03B8)h
Signed Integer
(32-bit)
SERMAINT
charge_m
2 - Refrigerant Charge
IR
954
(03BA)h
Signed Integer
(32-bit)
SERMAINT
wloop_m
3 - Water Loop Size
IR
956
(03BC)h
Signed Integer
(32-bit)
SERMAINT
s_date1
Date numeric
IR
958
IEEE Float

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
19 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
(03BE)h
(32-bit)
SERMAINT
s_hour1
Hour mntn numeric
IR
960
(03C0)h
Signed Integer
(32-bit)
SERMAINT
s_days1
Days running numeric
IR
962
(03C2)h
Signed Integer
(32-bit)
SERMAINT
f_date1
Fgas Date numeric
IR
964
(03C4)h
IEEE Float
(32-bit)
ALARMRST
alarm_1c
Current Alarm 1
IR
968
(03C8)h
Signed Integer
(32-bit)
ALARMRST
alarm_2c
Current Alarm 2
IR
970
(03CA)h
Signed Integer
(32-bit)
ALARMRST
alarm_3c
Current Alarm 3
IR
972
(03CC)h
Signed Integer
(32-bit)
ALARMRST
alarm_4c
Current Alarm 4
IR
974
(03CE)h
Signed Integer
(32-bit)
ALARMRST
alarm_5c
Current Alarm 5
IR
976
(03D0)h
Signed Integer
(32-bit)
MODBUSIP
modip_en
TCP/IP Server Enable
IR
1032
(0408)h
Signed Integer
(32-bit)
MODBUSIP
ser_UID
Server UID
IR
1034
(040A)h
Signed Integer
(32-bit)
MODBUSIP
port_nbr
Port Number
IR
1036
(040C)h
Signed Integer
(32-bit)
HEADCTRL
sst_min
Required minimum SST
IR
1042
(0412)h
IEEE Float
(32-bit)
HEADCTRL
pinch_sp
Required Min Pinch
IR
1044
(0414)h
IEEE Float
(32-bit)
HEADCTRL
OAT
Outdoor Air Temperature
IR
1046
(0416)h
IEEE Float
(32-bit)
HEADCTRL
startval
Master Starting Value
IR
1048
(0418)h
IEEE Float
(32-bit)
HEADCTRL
sst_dt_a
Error on Minimum SST
IR
1050
(041A)h
IEEE Float
(32-bit)
HEADCTRL
sst_dt_b
Error on Minimum SST
IR
1052
(041C)h
IEEE Float
(32-bit)
HEADCTRL
propor_a
Master Proportional Term
IR
1054
(041E)h
IEEE Float
(32-bit)
HEADCTRL
propor_b
Master Proportional Term
IR
1056
(0420)h
IEEE Float
(32-bit)
HEADCTRL
integr_a
Master Integral Term
IR
1058
(0422)h
IEEE Float
(32-bit)
HEADCTRL
integr_b
Master Integral Term
IR
1060
(0424)h
IEEE Float
(32-bit)
HEADCTRL
condsp_a
Computed Cond Setpoint
IR
1062
(0426)h
IEEE Float
(32-bit)
HEADCTRL
condsp_b
Computed Cond Setpoint
IR
1064
(0428)h
IEEE Float
(32-bit)
HEADCTRL
conda_dt
Condensing Error
IR
1066
(042A)h
IEEE Float
(32-bit)
HEADCTRL
condb_dt
Condensing Error
IR
1068
(042C)h
IEEE Float
(32-bit)

ECG-UG-16-006
REVISION
DATE
PAGE
AquaCIAT LD/ILD
Modbus
Rev A
1/13/17
20 OF 20
Company private. Do not distribute outside of CIAT Corporation
Table
Item
Description
Media
Type
Address
(hex)
Format
HEADCTRL
fanctl_a
Low OAT Fan Ctrl Mode
IR
1070
(042E)h
Signed Integer
(32-bit)
HEADCTRL
fanctl_b
Low OAT Fan Ctrl Mode
IR
1072
(0430)h
Signed Integer
(32-bit)
HEADCTRL
headdi_a
Computed Differential
IR
1074
(0432)h
IEEE Float
(32-bit)
HEADCTRL
headdi_b
Computed Differential
IR
1076
(0434)h
IEEE Float
(32-bit)
HEADCTRL
stage0_a
Offset Low Speed
IR
1078
(0436)h
IEEE Float
(32-bit)
HEADCTRL
stage0_b
Offset Low Speed
IR
1080
(0438)h
IEEE Float
(32-bit)
HEADCTRL
fanseq_a
Fan Control Sequence
IR
1082
(043A)h
Signed Integer
(32-bit)
HEADCTRL
fanseq_b
Fan Control Sequence
IR
1084
(043C)h
Signed Integer
(32-bit)
HEADCTRL
fan_a
Fan Speed
IR
1086
(043E)h
IEEE Float
(32-bit)
HEADCTRL
fan_b
Fan Speed
IR
1088
(0440)h
IEEE Float
(32-bit)
HEADCTRL
now_scta
Current Condensing Tmp
IR
1090
(0442)h
IEEE Float
(32-bit)
HEADCTRL
now_sctb
Current Condensing Tmp
IR
1092
(0444)h
IEEE Float
(32-bit)
HEADCTRL
nxt_scta
Next Condensing Tmp
IR
1094
(0446)h
IEEE Float
(32-bit)
HEADCTRL
nxt_sctb
Next Condensing Tmp
IR
1096
(0448)h
IEEE Float
(32-bit)
FCOOL_ST
fc_oat
Free Cooling OAT
IR
1098
(044A)h
IEEE Float
(32-bit)
FCOOL_ST
fc_lwt
FC Leaving Water Temp
IR
1100
(044C)h
IEEE Float
(32-bit)
FCOOL_ST
fc_wloop
FC Water Loop Temp
IR
1102
(044E)h
IEEE Float
(32-bit)
FCOOL_ST
m_fcool
Free Cooling Mode Active
IR
1104
(0450)h
Signed Integer
(32-bit)
FCOOL_ST
fc_cap
FC Capacity
IR
1106
(0452)h
Signed Integer
(32-bit)
FCOOL_ST
fc_fanst
Fc Fan Stage
IR
1108
(0454)h
Signed Integer
(32-bit)
FCOOL_ST
fc_fansp
Fc Varifan Speed
IR
1110
(0456)h
IEEE Float
(32-bit)
FCOOL_ST
FC_HOUR
FC Operating Hours
IR
1112
(0458)h
IEEE Float
(32-bit)