Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Saia-Burgess Controls AG

PCD2.H100

Input/output (I/O) modules

5

Case b): If the count range has to extend beyond the value 65,535, “Reset

Enable” can be activated later, i.e. between the penultimate and the

last time the counter reaches zero. This means that the CCO output is

only reset after several passes of the counter. The number of passes is

counted by a CPU counter.

For example, output CCO should be switched off after 200,000 count signals.

0 200'000

3392 65536 65536 65536

200'000

4 3 2 1 0

Counter Flag

Reset Enable

CCO

CPU counter

Programming

Classic: Programming examples for the PCD2.H100 can be found in a separate

manual and on the TCS Support site (www.sbc-support.ch + getting started).

xx7: the firmware reads in the values according to the configuration (I/O Builder)

Watchdog: This module cannot be used on the base address 240 (or 496 for the

PCD2.M17x), because it would interact with the watchdog, and would cause a

malfunction.

For details, please refer to the “Watchdog” section, which describes the correct use

of the watchdog in conjunction with PCD2 components.