17.
17 - 3
BASE UNIT AND EXTENSION CABLE
17.1.1 Main base unit for high-speed access (A38HB/A38HBEU)
The main base units, (A38HB/A38HBEU) for high-speed access have been improved in
the speed of access to the buffer memory of the special function module mounted on
A38HB/A38HBEU.
REMARK
(1) The A38HB/A38HBEU base unit is dedicated to the QnACPU and cannot be used
with the ACPU.
(2) When using the simulation module A6SIM-X64Y64, set its base unit specification to
"1" or later.
If "0" is set, the A6SIM-X64Y64 does not operate normally.
When "0" is to be set for the base unit specification of the A6SIM-X64Y64, replace
the base unit with the A38B.
POINT
(1) The A38HB/A38HBEU can perform high-speed access to the buffer memories
of special function modules only. I/O devices of I/O modules are not accessed
at high speed but at the same access speed as that of a conventional main
base unit.
(2) When an extension base unit is connected to the A38HB/A38HBEU, the
buffer memories of the special function modules on the extension base unit
are not accessed at high speed. The access speed is the same as the one in
the case of connecting to a conventional main base unit.