Honeywell SS4-A HART User Manual

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User Guide

SS4-A HART

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 Revision Histor y

Author Revision Date Comments

T. Lapp A April 19, 2013 Initial release

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Table of Contents

1 Introduction .................................................................................................. 4

2 4-20 ma of SS4 ............................................................................................. 4

3 Supported HART Commands ..................................................................... 5

3.1 Command 0 .......................................................................................................... 5

3.2 Command 1 .......................................................................................................... 6

3.3 Command 2 .......................................................................................................... 6

3.4 Command 3 .......................................................................................................... 7

3.5 Command 6 .......................................................................................................... 8

3.6 Command 7 .......................................................................................................... 8

3.7 Command 8 .......................................................................................................... 9

3.8 Command 12 ........................................................................................................ 9

3.9 Command 13 ........................................................................................................ 9

3.10 Command 14 ...................................................................................................... 9

3.11 Command 15 .................................................................................................... 10

3.12 Command 16 .................................................................................................... 11

3.13 Command 20 .................................................................................................... 11

3.14 Command 50 .................................................................................................... 11

4 LED Indication ............................................................................................ 12

5 HART Module Address .............................................................................. 12

6 HART Module Mounting ............................................................................ 12

7 HART Module Connections ....................................................................... 13

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1 Introduction

The Fire Sentry FSCHCOM-SS4
module is a piggy-back device that
allows SS4-series flame detectors
to communicate with a HART
Network Master. The HART module
may be considered to be a protoc ol
converter. The flame detector itself
communicates to external devi ces
with the FireBus-I proprietary
protocol. This HART module obtains
alarm and fault status using FireBus­I, and then upon receiving a HART
command will respond to the HART

master by re t urning the necess ar y
information. Communication with the master requires that the request that
matches the short address (assigned by the rotary switch) or long address (a
combinat ion of device type and s er ial number).

Pin #2 and Pin #3 of J102 of this module are used for HART communication.
Current-loop 4-20 ma is sourced from Pin #2 when switches at S100 are ON, and
ground is the current-return poi n t. See below for connect ion details.

2 4-20 ma of SS4

This FSCHCOM-SS4 is providing 4-20ma analog value as well as HART protocol
simultaneously. In single drop configuration (I=One master to One Device) the
analog 4-20ma provide the following information.

0 ma : PCB fault, Voltage fault, temperature fault, relay fault.
2 ma : Optical Self Test fail & Lid Off fault.
4 ma : Normal.
20 ma : Alarm.

D105 LED
D103 LED
D104 LED
D102 LED

J102

J101

12

3

4

1234

RSW10 0

S10 0

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3 Supported HART Commands

The SS4-A HART module supports the commands enumerated below.

3.1 Comm a nd 0

Use command 0 to read Unique Identifier.
Response to command 0:
Manufacturer ID: Hex 6042 String FSCHCOM
Product ID: Hex E180
Polling address is assigned by rotary switch RSW100 ( 0 , 1, 2, 3, 4, 5, 6, 7, 8, 9,

A, B, C, D, E, F).

Placing RSW100 to position 1,2,3.. to F, you are putting the devices in hardware
address mode. Hardware address will over-ride soft war e address.

Placing RSW100 to position 0, you are putting the devices in software addressing
mode.

You can use command 6 to write polling address to the FSCHCOM module.
Once software polling address is written into the FSCHCOM, the address is
saved into flash memory until ov er wr i tten by next comm an d 6.

Byte Format Description

0 Unsigned 8 Must be Decimal 254 (Hex FE)
1 to 2 Code Device Type Hex E1 80
3 Unsigned 8 Minimum number of preambles byte from master= 5
4 Unsigned 8 HART Major Revision = 7
5 Unsigned 8 Device Revision Level = 0
6 Unsigned 8 Software Revision = 1
7 Unsigned 8 Bit 7,6,5,4,3 Hard ware revision = 0x10

Bit 2,1,0 physical signal code 0x01
8 Unsigned 8 Flag = 0. N/A
9 to 11 Unsigned

24

Device ID unique from manufacturer

12 Unsigned 8 Mini m um number o f preambles byte to m as t er = 5
13 Unsigned 8 Maximum number of device variable = 4
14 to 15 Unsigned

16

Configuration Change Counter = 0. No user configurtion