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General
6
1.4 Structure
The Modicon A500 consists of a controller and the I/O peripherals, i.e., one of a
number of I/O modules depending on the task. It can be put together in a specific way
for the relevant application due to its modular structure.
The following pages help to clarify the construction principle of the A500. Section 3.1
gives more detailled information.
The controller of an A500 consists of a primary subrack which can be equipped with
modules which have the following functions:
Power supply (DNP ...)
Central processing unit (ALU 150, ALU 011 or ALU 061)
Monitoring module UKA 024 (only required with ALU 150)
Memory module (SF, SC, only required with ALU 150)
PMB node such as BIK, KOS, KP1-..., ... (optional, depends on the task)
PEAB-area PMB-area
Figure 2 Modicon A500 with Rear Connection, Equipped with PMB and PEAB Nodes
1.4.1 Standard Equipment for the Controller
Partly equipped standard equipment which is to be expanded with memory modules
and the I/O peripherals can be obtained for standard applications They are ready for
the connection, i.e., preset and inspected both module by module and as a complete
unit.
The standard equipment can be supplied selectively with German or English basic soft-
ware. Only the standard equipment with German basic software is described in this
manual.
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