Honeywell HA40 technical manual Modbus RS-232 / RS-485 Interface Option

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HA40 4-Channel Controller

3.2 MODBUS RS-232 / RS-485 Interface Option

(P/N 10-0253)

The 10-0253 Modbus option PCB add both RS-232 and RS-485 Modbus RTU slave ports. Figure 3-7 shows this optional PCB, which mounts to connectors on the upper right corner of the HA40 motherboard. TB1 provides two pairs of T/Rx terminals and a floating terminal for shield continuation. This makes it easy to multi-drop HA40s onto an RS-485 cable without doubling wires into the same screw terminals. RS-232 interface may be made by connecting to DB9 connector S1. Section 3.3.1 lists all modbus registers and their function codes.

Caution

Follow correct IEEE RS-232 and RS-485 installation guidelines when using the 10-0253 option.

Figure 3-7. HA40 Modbus Interface Option (P/N 10-0253)

3.2.1MODBUS Register And Function Code Summary

The following table identifies the available modbus RTU register locations and function codes.

 

 

READ

WRITE

VARIABLE

ALIAS

FUNCTION

FUNCTION

 

 

CODE

CODE

Read/Write Coils:

 

 

 

Alarm Ack/Reset

2001

1

5

 

 

 

 

Note:

 

 

 

After writing a TRUE to this register, the HA40 automatically returns it to

FALSE.

Read Only Discrete:

Chan 1 Fault Alarm

12001

2

NA

 

 

 

 

Chan 1 Alarm 1

12002

2

NA

 

 

 

 

Chan 1 Alarm 2

12003

2

NA

Chan 1 Alarm 3

12004

2

NA

Chan 2 Fault Alarm

12005

2

NA

Chan 2 Alarm 1

12006

2

NA

 

 

 

 

Chan 2 Alarm 2

12007

2

NA

 

 

 

 

Chan 2 Alarm 3

12008

2

NA

 

 

 

 

Chan 3 Fault Alarm

12009

2

NA

Chan 3 Alarm 1

12010

2

NA

Chan 3 Alarm 2

12011

2

NA

Chan 3 Alarm 3

12012

2

NA

 

 

 

 

Chan 4 Fault Alarm

12013

2

NA

 

 

 

 

Chan 4 Alarm 1

12014

2

NA

 

 

 

 

Chan 4 Alarm 2

12015

2

NA

Chan 4 Alarm 3

12016

2

NA

HA40 Technical Manual

3-6

Revision 1 (08/08)

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Contents Technical Manual HA40 4-Channel Controller SafetyTable of Contents Operation Parts List General Description Keypad CAL in Progress General DescriptionData Display Screens SpecificationsAltitude Ambient Temperature RangeRelays Humidity RangeApprovals Housings / Installation CategoriesOperation Operation Setup Menu ConfigurationChanging Menu Variables Using the Keypad Setup Configuration MenusChannel Setup Entry Menu Configure Menu To Define Channel Fault / Alarm 1 / Alarm 2 / Alarm 3 Set-Up MenusTurning Off Unused Channels Decimal Point ResolutionName / Eunits Ascii Data Fields Input Measurement RangeCalibrate Input Menu Cal Setup MenuStandard / Optional Relay Setup Menus System Configuration MenusComm Port Remote ID Menu Clock / Delays MenuHorn / Acknowledge Menu Analog Setup Menu12. Horn/Acknowledge Menu HA40 System Security MenuHA40 4-Channel Controller Motherboard Interface PCB Shock Hazard Motherboard Interface PCBRS-R85 / Ethernet Option Sensor Input Option Input / Output Optional PCB’sOptional Analog Input PCB Optional 4-20mA Analog Output Board Modbus RS-232 / RS-485 Interface Option Read Only Registers Variable Alias Memory Ascii Strings Enclosures Enclosures HA40XP Nema 7 Explosion-Proof WallHA40N4 Nema 4X Wall Mount Enclosure Parts List Base Units Parts ListSpecifications Specifications Warranty Honeywell Analytics Warranty Statement Find out more Customer business center Asia Pacific Americas

HA40 specifications

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