Honeywell ModBus S7810M, Руководство по установке, Страница: 19 / 24

S7810M MODBUS™ MODULE
19 65-0249—07
7800 SERIES Burner Control Fault History Records
Table 18 describes the registers that are part of a fault history
record. To determine the actual register address for a
parameter within the record, add the register offset to the start
address of the record.
Expanded Annunciator
The codes shown in Table 19 are available in the Expanded
Annunciator First Out Code Register. These codes are
normally translated to the appropriate fault code by the Burner
Control. The fault code will then be translated to the
appropriate first and second line messages as shown in Table
17 for use by the UMC800 Operator Interface.
Response Message Format for Function Code 17.
This format is device specific and is only available for the 7800
SERIES burner control. See Table 20.
Table 20. Response Message Format for function code 17 (11h), (26 bytes).
a
Slave ID: Always 0x78 when using RM78xx or EC78xx Relay Modules(1 byte) (byte 3).
b
Run Indicator Status: Always FF=ON (one byte)(byte 4).
c
Device Description: ASCII OS number for the Burner Control (11 bytes) (bytes 5-15).
Burner Control Type Codes
The burner control type code indicates the exact model number of the burner control. See Table 21.
246 FAULT 21h: HIGH OIL
PRESSURE
EA
43
247 FAULT 21g: BOTH FUELS
SELECT
EA
21
248
FAULT 21f: FUEL SELECT OFF
EA 38
249
FAULT 21e: AUX LIMIT #3
EA 19
250
FAULT 21d: HIGH LIMIT
EA 42
251
FAULT 21c: LWCO
EA 63
252
FAULT 21b: AUX LIMIT #2
EA 18
253
FAULT 21a: AUX LIMIT #1
EA 17
254
FAULT 10z: OTHER PREIGN ILK
EA 75
255
FAULT 10y: VALVE CLOSURE
EA 109
Table 18. Fault History Record Format.
Offset Parameter Name Access Format Notes
0 Fault code R U16 See Table
17.
1 Fault String R U16 See Table
16.
2 Sequence State R U16 See Table
15.
3 First line message R U16 See Table16.
4 Second line
message
R U16 See Table
16.
5 Sequence time R U16 Seconds.
6-7 Total cycles R U32
8-9 Total hours R U32
Table 17. 7800 SERIES Fault Codes. (Continued)
Fault
Code
(Reg
40001)
Fault Message
(NOTE: FAULT n: is not in
the Fault and Strings Code)
Fault
String
Code
(Table 16)
Table 19. Expanded Annunciator
First Out Code.
EA Status
Value (binary) Status Message
Line 2 String
Code (Table 16)
0xx 00000 No Expanded
Annunciator
N/A
0xx 00001 Burner Sw. 23
0xx 00010 Control On 27
0xx 00011 Aux. Limit #1 17
0xx 00100 Aux. Limit #2 18
0xx 00101 LWCO 63
0xx 00110 High Limit 42
0xx 00111 Aux. Limit #3 19
0xx 01000 FuelSelect Off 38
0xx 01001 BothFuelSelect 21
0xx 01010 High Oil Pres. 43
0xx 01011 Low Oil Pres. 61
0xx 01100 High Oil Temp 44
0xx 01101 Low Oil Temp. 62
0xx 01110 Atomizing Sw. 14
0xx 01111 High Gas Pres. 41
0xx 10000 Low Gas Pres. 59
0xx 10001 Airflow Sw. 13
0xx 10010 Aux. ILK #4 15
0xx 10011 Aux. ILK #5 16
0xx 10100 All Switches On (or)
Other PII (if hold or
lockout condition exists)
110
74
0x1 XXXXX Valve Closure 109
00XX XXXX Gas Select N/A
01XX XXXX Oil Select N/A
If the BC is in Standby and the 5LSB value is 1-16, then the
cause of the Standby Hold is the 5LSB value; otherwise the
hold is “Circuit Fault”.
Slave
Address
Function
Code Byte Count Slave ID
a
Run Indicator
Status
b
Device
Description
c
N/A CRC CRC
Byte 0 1 2 3 4 5-15 16-23 24 25