Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
Introduction
General guidance
2-12
2
2.8.3
Legacy PCD7.L60x-1 room controller emulation
The template is also designed to emulate an L60x room controller (to a
certain extent), making it easy to replace an L60x room controller with a freely
programmable device.
The focus, in this case, is on avoiding changes to the master PLC where the L60x
FBoxes are used.
The room application should be connected with the same parameter used by the
L60x FBoxes.
This means that the room HVAC sample application should “emulate” an L60x
room controller. However, the L60x controller has so many options and settings
that true emulation would soon be very complex and difficult to understand,
especially if adjustments are required.
For this reason, only the basic functionalities and application modes are emulated.
This is achieved simply by mapping the L60x register with the registers/flags in the
room application.
This is done in the PB Block_L60x. As soon the PB is accessed, a large amount
of data is copied from the L60x register (= addresses used by the L60x) to the
FBoxes in the room application, or vice versa.
For more detailed information, please refer to the separate document for the
manual room template, found at
.
