Bryan Boilers 200, Triple-Flex 150, 250, & 300 service manual Modbus Communication, Alert Codes

2.2.23MODBUS COMMUNICATION

The hydronic control Global Modbus port is a 3- pin connector that interfaces to the following RS-

485 signals:

Table 7 Modbus Terminals

Signal	Terminal
Data +	a
Data -	b
Common	c

Modbus connections can be made at the display (Figure 3 item 5) or the hydronic control (Figure 7 item 24).

For the modbus register map and other related information please download Honeywell’s R7910A product manual at:

http://customer.honeywell.com/TechLit/pdf/66- 0000s/66-1171.pdf

2.2.24ALERT CODES

Table 8 Alert Codes

Code	Description
0	None (No alert)
1	Alert PCB was restored from factory
	defaults
2	Safety configuration parameters were
	restored from factory defaults
3	Configuration			parameters			were
	restored from factory defaults
4	Invalid	Factory		Invisibility		PCB	was
	detected
5	Invalid	Factory		Range		PCB	was
	detected
6	Invalid range PCB record has been
	dropped
7	EEPROM		lockout		history		was
	initialized
8	Switched		application		annunciation
	data blocks
9	Switched		application		configuration
	data blocks
10	Configuration was				restored		from
	factory defaults
11	Backup	configuration			settings		was
	restored from active configuration
12	Annunciation			configuration			was
	restored from factory defaults

					Date:			8-4-2010
					Revision:				0
					Form:				2396
13	Annunciation			configuration						was
	restored from backup
14	Safety	group		verification				table		was
	restored from factory defaults
15	Safety	group		verification				table		was
	updated
16	Invalid Parameter PCB was detected
17	Invalid Range PCB was detected
18	Alarm	silence			time			exceeded
	maximum
19	Invalid safety group verification table
	was detected
20-26	RESERVED
27	Safety processor was reset
28	Application processor was reset
29	Burner switch was turned OFF
30	Burner switch was turned ON
31	Program Module (PM) was inserted
	into socket
32	Program Module (PM) was removed
	from socket
33	Alert PCB was configured
34	Parameter PCB was configured
	35 Range PCB was configured
36	Program Module				(PM)		incompatible
	with product was inserted into socket
37	Program			Module			application
	parameter		revision				differs			from
	application processor
38	Program Module				safety			parameter
	revision differs from safety processor
39	PCB	incompatible				with			product
	contained in Program Module
40	Parameter PCB in Program Module is
	too large for product
41	Range PCB in Program Module was
	too large for product
42	Alert PCB		in	Program			Module			was
	too large for product
43	IAS start check was forced on due to
	IAS enabled
44	Low voltage was				detected				in safety
	processor
45	High line frequency occurred
46	Low line frequency occurred
47	Invalid	subsystem				reset			request
	occurred
48	Write	large		enumerated					Modbus
	register value was not allowed
49	Maximum cycle count was reached
50	Maximum hours count was reached
51	Illegal Modbus write was attempted
52	Modbus write			attempt			was		rejected
	(NOT ALLOWED)

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