CIAT XtraConnect 2, Installation, Operation, Commissioning, Maintenance, Page: 59 / 62

EN - 58
25.2 Transmission mode.
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Serial, asynchronous, half duplex, RTU mode.
- 1 start bit.
- 8 data bits.
- The parity is set via parameter P702,
- The number of stop bits is set via parameter P703,
- The transmission speed is set via parameter P701,
- The unit number on the Bus is set via parameter P705.
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Coding of analogue values.
Standard 32-bit IEEE format (2 registers).
Order of values:
- If P704 = No: low order, high order.
- If P704 = Yes: high order, low order.
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Function codes used.
1 or 2: read n bits.
3 or 4: read multiple registers (16 bits)
5: write one bit …………..
6: write register function…
8: read diagnostics counters.
11: read event counter.
15: write n bits.
16: write multiple registers (16 bits)
Note: the write functions are enabled if parameter P103 is set to
"Remote, BMS…"
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Error codes:
1: function code unknown.
2: address incorrect.
3: data error.
25.3 Customer-accessible register
Register No.
hexadecimal
Register
No.
decimal
Description Format Type Setting
Registers accessible in read-only mode (Functions 3 or 4)
0x01 1 Controller name Decimal Read-only 36 = Xtra Connect 2
0x02 2 Actual operating mode Decimal Read-only 0 = off; 1 = cooling; 2 = heating
0x3 and 0x4 3 and 4 Outdoor temperature Float Read-only
0x5 and 0x6 5 and 6 Control setpoint Float Read-only
0x7 and 0x8 7 and 8 Evaporator inlet temperature Float Read-only
0x9 and 0xa 9 and 10 Evaporator outlet temperature Float Read-only
0xb and 0xc 11 and 12 Condenser inlet temperature Float Read-only
0xd and 0xe 13 and 14 Condenser outlet temperature Float Read-only
0xf and 0x10 15 and 16 Manifold outlet temperature (modules 1 and 2) Float Read-only
0x11 and 0x12 17 and 18 Master/slave manifold outlet temperature (2 machines) Float Read-only
0x13 19 Number of stages on Char Read-only
0x20 and 0x21 32 and 33 P285 Heating mode runtime (in hours) Float Read-only
0x22 and 0x23 34 and 35 P286 Cooling mode runtime (in hours) Float Read-only
0x24 and 0x25 36 and 37 P287 Pump 1 runtime (in hours) Float Read-only
0x26 and 0x27 38 and 39 P288 Pump 2 runtime (in hours) Float Read-only
0x28 and 0x29 40 and 41 P310 Number of compressor 1 starts Float Read-only
0x2a and 0x2b 42 and 43 P311 Compressor 1 runtime Float Read-only
0x2c and 0x2d 44 and 45 P313 Number of compressor 2 starts Float Read-only
0x2e and 0x2f 46 and 47 P314 Compressor 2 runtime Float Read-only
0x30 and 0x31 48 and 49 P340 Number of compressor 3 starts Float Read-only
0x32 and 0x33 50 and 51 P341 Compressor 3 runtime Float Read-only
0x50 and 0x51 80 and 81 Voltage between phases 1 and 2 (module 1) Float Read-only
0x52 and 0x53 82 and 83 Voltage between phases 2 and 3 (module 1) Float Read-only
0x54 and 0x55 84 and 85 Voltage between phases 1 and 3 (module 1) Float Read-only
0x56 and 0x57 86 and 87 Current input (module 1) Float Read-only
0x58 and 0x59 88 and 89 Instantaneous power consumption (module 1) Float Read-only
0x5a and 0x5b 90 and 91 Module 1 power consumption (kW) Float Read-only Write 0 to reset modules 1 and 2
0x5c and 0x5d 92 and 93 Voltage between phases 1 and 2 (module 2) Float Read-only
0x5e and 0x5f 94 and 95 Voltage between phases 2 and 3 (module 2) Float Read-only
0x60 and 0x61 96 and 97 Voltage between phases 1 and 3 (module 2) Float Read-only
0x62 and 0x63 98 and 99 Current input (module 2 Float Read-only
Registers accessible in read-only mode (Functions 3 or 4)
0x64 and 0x65 100 and 101 Instantaneous power consumption (module 2) Float Read-only
0x66 and 0x67 102 and 103 Module 2 power consumption (kW) Float Read-only Write 0 to reset modules 1 and 2
0x68 and 0x69 104 and 105 Total current input Float Read-only
0x6a and 0x6b 106 and 107 Total instantaneous power consumption Float Read-only
0x6c and 0x6d 108 and 109 Total power consumption (kW) Float Read/Write Write 0 to reset modules 1 and 2
Registers accessible in read mode (Functions 3 or 4) and write mode (Function 16)
0x101 and 0x102 257 and 258 P121 Cooling setpoint 1 Float Read/Write
0x103 and 0x104 259 and 260 P122 Cooling setpoint 2 Float Read/Write
0x105 and 0x106 261 and 262 P123 Heating setpoint 1 Float Read/Write
0x107 and 0x108 263 and 264 P124 Heating setpoint 2 Float Read/Write