X90 mobile modules
206
X90 mobile system User's manual V 1.20 - Translation of the original manual
Communication status of the module
Name:
InputSequence
Register "InputSequence" contains information about the communication status of the module. It is written by the
module and should only be read by the CPU.
Data type
Values
USINT
See the bit structure.
Bit structure:
Bit
Description
Value
Information
0 - 2
InputSequenceCounter
0 - 7
Counter for sequences issued in the input direction
0
Not ready (disabled)
3
InputSyncBit
1
Ready (enabled)
4 - 6
OutputSequenceAck
0 - 7
Mirrors OutputSequenceCounter
0
Not ready (disabled)
7
OutputSyncAck
1
Ready (enabled)
InputSequenceCounter
The InputSequenceCounter is a continuous counter of sequences that have been issued by the module. The mod-
ule uses InputSequenceCounter to direct the CPU to accept a sequence (the input direction must be synchronized
when this happens).
InputSyncBit
The module uses InputSyncBit to attempt to synchronize the input channel.
OutputSequenceAck
OutputSequenceAck is used for acknowledgment. The value of OutputSequenceCounter is mirrored if the module
has received a sequence successfully.
OutputSyncAck
The OutputSyncAck bit acknowledges the synchronization of the output channel for the CPU. This indicates that
the module is ready to receive data.
