IO207
IO207 — The IO207 I/O module provides a total of
128 digital TTL lines.
Introduction
The IO207 I/O module provides a total of 128 digital TTL lines, programmable as
inputs or outputs in groups of eight channels. Each channel group can be configured
to use pull-up resistors (5 V or 3.3 V, ±24 mA), pull-down resistors
or floating lines.
The digital channels are accessible in two main groups (front and rear) of 64
channels on two separate connectors. The driver implements the following additional
features for each main group:
Option to enable only the first half of the channels of a main group
(the rest of the channels are then disabled). This reduces the overall
latency of the I/O module, because less data is written to the bus
Option to enable synchronous read and write operations on all the
channels of a main group. This allows all 64 channels to be
simultaneously updated, but also increases the overall latency of the
I/O module.