Honeywell SEARCHLINE EXCEL PLUS Technical Manual

76 Chapter 10 Communications
Searchline Excel™ Plus / Searchline Excel™ Edge – Technical Manual
10.5.6Modbus MultiDrop Mode
A maximum of 32 nodes (1 controller, 31 responders) are supported in a multi-drop installation.
10.5.7Modbus Protocol
Authoritative information on the Modbus protocol can be found at www.modbus.org.
Supported baud rates are 9600 and 19200 with 9600 as the default (none parity, 1 stop bit) and follower addresses
set as 1 by default.
Status reading and configuration of important parameters (adjustable with Honeywell Fixed Platform App and HART)
can also be performed using the Modbus interface. This appendix describes only how to monitor Searchline Excel Plus &
Searchline Excel Edge status using Modbus.
10.5.8Modbus Registers
Modbus Holding Register
Address
First Last Qty
Register
Type
Parameter Description Additional Description Notes
40001 40001 1 r Modbus responder address MSB -> 0x28
LSB -> Responder address (1 to 247,
address 60 excluded)
Note 5
40002 40002 1 r Detector Id Identical to 40001 Note 5
40003 40004 2 r Gas reading Reported gas concentration
40005 40005 1 r Reserved ------ Note 13
40006 40006 1 r Detector detail status *see notes Note 3
40007 40007 1 r Operating state *see notes Note 8
40008 40008 1 r Heart Beat low 16 bits of SDS variable
40009 40009 1 r Discrete or proportional 0=discrete, 1=proportional
40010 40010 1 r Alarm Latch config mask of individual alarm latches
40011 40011 1 r Measurement unit ------ Note 4
40012 40014 3 r Relay status(Active/Inactive) 0=deenergized, 1=energized
40015 40015 1 r ADC Temp. Sensor ------
40016 40016 1 r PSU1 Temp. Sensor ------
40017 40017 1 r AFE Temp. Sensor ------
40018 40030 13 r Device Name From Bluetooth Note 16
40031 40035 5 r Reserved ------
40036 40036 1 r Sensor type ------ Note 15
40037 40038 2 r mA Output mA Output readback current
40039 40039 1 r Voltage monitor 24V_PROT_SW Note 17
40040 40040 1 r Voltage monitor 5V0_SAFE Note 17
40041 40041 1 r Voltage monitor 12V_SAFE Note 17
40042 40042 1 r Voltage monitor 3V3_SAFE Note 17
40043 40043 1 r Voltage monitor 12V Note 17
40044 40044 1 r Voltage monitor 3V3 Note 17
40045 40045 1 r Voltage monitor 5V0 Note 17
40046 40046 1 r Voltage monitor 1V2_SAFE Note 17
40047 40047 1 r Voltage monitor +5V_HTR Note 17
40048 40052 5 r Reserved ------
40053 40059 7 r Reserved ------
40060 40060 1 r Voltage monitor +INTRA_1V2 Note 17
40061 40061 1 r Configuration counter From HART

Honeywell SEARCHLINE EXCEL PLUS Specifications

General

Brand	Honeywell
Model	SEARCHLINE EXCEL PLUS
Category	Gas Detectors
Language	English