Honeywell ModBus S7810M, Руководство пользователя, Страница: 5 / 20

S7810M MODBUS™ MODULE
5 65-0249—4
Table 9. Exception Codes.
Device Address and Baud Rate
Assign each S7810M in the system a unique address by setting the
MODBUS ADDRESS switches on the bottom of the device to the
correct number. See Fig. 4. Only RTU communications with 1 Start
Bit, 8 Data Bits, 1 Stop Bit and no parity is supported.
NOTE: Assign a device address number from 01 to 99. 00 is not an
acceptable address number and will not work, except for
the broadcast ability of function 6.
The default baud rate is 9600. To change the baud rate to 19.2K,
use a needle-nosed pliers to remove the jumper.
IMPORTANT:
FlameNet™ requires a baud rate of 19.2K.
NOTE: In Tables 10, 15 and 19: Line 1 and Line 2 refer to the
two lines of text on the S7800 Keyboard Display Module.
In Tables 15, 17 and 19: The String Code column
references Table 66, String Codes.
In Table 15: The Burner Control State Bits column
references Table 22, Burner Control State Bits. “cb_sqst”
is the Burner Control Sequence Status.
Fig. 4. S7810M Address Switches and Baud Rate Jumper.
Exception
Code Definition Description
01 Illegal
Function
An illegal function as requested. Only 3, 4, 6
and 17 are supported.
02 Illegal Data
Address
Too many bytes requested, address is out of
range, register is read only, or the number of
address requested is past the last register.
03 Illegal Data
Value
The “Preset Data” from function code 6 is
invalid/out of range.
3 4
2
1
5
89
7
6
0
3 4
2
1
5
89
7
6
0
10'S 1'S
BAUD
RATE
MODBUS
ADDRESS
OUT
19.2K
IN
9600
5
6
7
3
4
2
1
8
9
0
SCREWDRIVER
NEEDLENOSE
PLIERS
M17650
Table 10. ModBus™ Register Assignments.
Address
(hex)
Register
(dec) Parameter Name
Read/
Write Format Notes
0000 40001 Burner Control (BC) Fault Code R U16 See Table 17.
0001 40002 BC Fault String Code R U16 See Table 16.
0002 40003 BC Sequence State R U16 See Table 15 (valid only if Fault code = 0).
0003 40004 BC State String Code (line 1) R U16 See Table 16.
0004 40005 BC State String Code (line 2) R U16 See Table 16.
0005 40006 BC Sequence time R U16 0-4095 Seconds.
0006 40007 BC Total cycles R U32 Max value is 0xFFFFFFFF.
0008 40008 BC Total hours R U32 Max value is 0xFFFFFFFF.
000A 40011 BC Flame 1 signal strength R U16 0 to 255 represents 0.0 to 25.5 volts.
000B 40012 BC Flame 2 signal strength R U16 0 to 4095. N/A for 7800 SERIES.
000C 40013 BC State Bits R U16 See Table 22.
000D 40014 S7830 First Out Code R U16 See Table 19.
000E 40015 S7830 State Bits R U32 Bit 31 (MSB) to Bit 0 (LSB) represent Terminals T31 to T0 of
the Expanded Annunciator. Only T4-T22 are used.
0010-
0019
40017-
40026
BC Fault history record 1 R Newest fault record. See Table 18.
001A-
0023
40027-
40036
BC Fault history record 2 R Second newest fault record. See table 18.
0024-
002D
40037-
40046
BC Fault history record 3 R Third newest fault record. See Table 18.
002E-
0037
40047-
40056
BC Fault history record 4 R Fourth newest fault record. See Table 18.
0038-
0041
40057-
40066
BC Fault history record 5 R Fifth newest fault record. See Table 18.
0042-
004B
40067-
40076
BC Fault history record 6 R Oldest fault record. See Table 18.
004C 40077 BC Flame Failure Response Time R U16 Tenths of Seconds.
004D 40078 BC Manufacturing code R U32
004F 40080 BC Type Code R U16 See Table 21.
0050 40081 BC Software version R U32
0052 40083 EA Software version R U32