Honeywell HC900 - Hand;Off;Auto Control; Table 6-24 HOA Control Parameters

Parameters accessible with Function Code 03, 06,10h
Hand/OFF/Auto Control
Revision 13 HC900 Process Controller Communications User Guide 83
April 2017
6.14 Hand/OFF/Auto Control
Summary
This table contains Hand/Off/Auto Map addresses of HOA #1.
See the HOA Register Maps Table 6-1 for starting and ending addresses (hex) for Hand/Off/Auto #2
through Hand/Off/Auto #16 Map Addresses.
The Modbus HOA number address for a HOA can also be obtained from the Process Control Designer
printout of "Block Modbus Addresses".
Function Code Support:
Reads – Function Code 3
Writes – Function Code 16 (10 hex) for preset of multiple registers (e.g., for floating point)
Writes – Function Code 6 for presetting an integer value
For custom addresses view or print a report in HC Designer.
Table 6-24 HOA Control Parameters
Fixed
Address
(hex)
Fixed
Register
(decimal)
Parameter Name
Access
Notes
6600
26113
Status
R
Bit Packed
Bits 0 – 3: Hand-Off-Auto State
Bit 0: Off : 0=NO, 1=YES
Bit 1: Hand: 0=NO, 1=YES
Bit 2: Auto: 0=NO, 1=YES
Bit 3: Bypass: 0=NO, 1=YES
Bit 4: Request Output
0 = OFF, 1 = ON
Bit 5: Local Source ON: 0=NO, 1=YES
Bit 6: Remote Source ON: 0=NO, 1=YES
Bit 7: Local and Remote ON: 0=NO, 1=YES
Bit 7-15: Unused
6601
26114
Remote Off-state Change
Request
W
Unsigned 16 Integer
Data Ignored
6602
26115
Remote Hand-state Change
Request
W
Unsigned 16 Integer
Data Ignored
6603
26116
Remote Auto-state Change
Request
W
Unsigned 16 Integer
Data Ignored
6604
26117
Local Source
W
Unsigned 16 Integer
Data Ignored
6605
26118
Remote Source
W
Unsigned 16 Integer
Data Ignored
6606
26119
Local and Remote Source
W
Unsigned 16 Integer
Data Ignored