ABB FOUNDATION Fieldbus Linking Device LD800HSE EX
General
• Linking device according to class 42c of FF HSE
profile
• Connects up to four H1 links to an HSE subnet
• Certified for decentralized installation in
hazardous areas Zone 2 / Division 2
- cULus Class I, Division 2, Groups A, B, C, D
- IECEx Ex nA IIC T4 Gc
- ATEX II 3G Ex nA IIC T4 Gc
• G3 coated acc. to:
- ANSI/ISA7104
- EN 60068-2-60
Gateway
• Identification of devices connected to the H1
links
• Configuration of connected H1 devices through
System Management and Network Management
via HSE
• Access to the function blocks of connected H1
devices via HSE
• Republishing of process data between H1 links
• Republishing of process data from H1 to HSE
and vice versa
• Distribution of alarms and events sent by H1
devices
HSE
- System Management Agent
- Network Management Agent
- Server providing object access to H1 devices
- Publishing/Subscribing of process data from/
to H1 devices
- Distribution of alarms and events sent by H1
devices
- Time synchronization via SNTP
- IP address configurable via integrated web
server
H1
- System Management Manager
- Network Management Manager
- Client for object access
- Publisher and Subscriber of process data
- Reception of alarms and events
- Link Master, SM Time Publisher

The FOUNDATION Fieldbus Linking Device LD
800HSE EX is registered according to class 42c of
the HSE profile, therefore providing the following
functions:
• Identification of devices connected to the
H1 links
• Configuration of connected H1 devices through
System Management and Network Management
via HSE
• Access to the function blocks of connected H1
devices via HSE
• Republishing of process data between H1 links
• Republishing of process data from H1 to HSE
and vice versa
• Distribution of alarms and events sent by
H1 devices
In each of the four H1 channels the Linking Device
operates as the Link Master as well as the SM Time
Publisher.
Function
LD 800HSE EX is a highly compact gateway between
four FF H1 links and FF HSE suited for redundant
use. The linking device meets protection class IP20
and is DIN rack mountable. It is powered by 24 Vdc
and supports Ethernet 10 Mbit/s and 100 Mbit/s.
Maximum Limits per H1 Channel
Connections (VCRs) - overall 1 128
- Source 2
+ Sink 20
- Client + Server 40
- Publisher + Subrscriber 100
LAS shedules 2
Sub-schedules 4
Sequences per sub-schedule 64
Elements per sequence 4
Size of LAS schedule domain [octets] 2000
The total number of Source/Sink, Client/Server, and Publisher/
Subscriber VCRs in an H1 channel cannot exceed this value.
2 As the LD 800HSE does not generate alarms, there is no practical
use case for Source VCRs.
Integration into the ABB Ability™ System
Structure
Within a typical ABB Ability™ system structure
as shown in Figure 1 a FOUNDATION Fieldbus
subsystem is linked to the control system via the
HSE subnet. The linking devices LD 800HSE EX
serve as gateways between the field devices on
the H1 links and the HSE subnet.
The FOUNDATION Fieldbus subsystem consists
of linking devices and possibly other devices
which communicate with one another using the
HSE protocol and subsidiary H1 links. As a device
registered as a class 42c device of the HSE profile
the LD 800HSE EX allows process data that are
being published cyclically on the subsidiary H1
links to be republished on the HSE subnet.
By using HSE republishing, it is possible to
configure cyclical communication between field
devices on different H1 links and devices on the
HSE subnet. Furthermore alarms and events from
H1 devices are communicated to the Connectivity
Servers FF, thus allowing seemless integration in
the overall 800xA alarm management philosophy.
The displayed system structure also includes
redundant LD 800HSE EX. The corresponding H1
ports of both physical linking devices making up
a redundant set of linking devices are connected
to the same H1 link. Both physical devices belong ing to a redundant set are connected via a serial
RS-232 null modem cable for exchanging redun dancy control information.
Within a typical 800xA system structure system
structure the FOUNDATION Fieldbus subsystem
is interfaced to the IEC 61131 controller using the
communication interface module CI860 in the AC
800M which acts as HSE host on the HSE subnet.