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Note
Scanning
Channel Pairs
Note
Scan Sequence:
Continuous Output
Scan Sequence:
Pulsed Output
To switch two or more channel pairs, use OPEN <channel_list> to open
channel pairs and use CLOSe <channel_list> to close channel pairs. With
simultaneous actuations, all channel pairs in the OPEN <channel_list> or
CLOSe <channel_list> are actuated essentially simultaneously (less than
secWith stepped actuations, a 30-msec delay occurs between actuations
of each channel pair in the channel_list.
When multiple channel pairs are switched, the actuation order is not
guaranteed. If actuation order is important, use a separate OPEN or
CLOSe command for each channel.
For 36-channel mode, scanning channel pairs means to open/close more
than one channel pair (SET/RESET) using the SCAN <channel_list>
command to set the scan list. When scanning channel pairs, continuous or
pulsed output is available (see "Setting Pulsed/Continuous Outputs"). The
scan sequences for continuous and pulsed output follow.
The scan sequence depends on whether continuous or pulsed output is
selected (as set with CNFG 2), but is not affected by the setting for
simultaneous or stepped actuation (as set with CNFG 1).
To set 36-channel mode scanning with continuous output, connect CNFG 0
to GROUND and leave CNFG 2 open. (The CNFG 1 setting does not
matter.) With continuous output, a 60 msec delay occurs between actuations
of channel pairs for each channel pair in the SCAN <channel_list>. The scan
sequence for 36-channel mode scanning with continous output is:
1. Close the first channel SET and open the first channel RESET
2. Wait for the 30 msec timer
3. Open the first channel SET and close the first channel RESET
4. Wait for the 30 msec timer
5. Repeat steps 1 - 4 for next channel, to the end of the channel_list
6. If ARM:COUNt >1, repeat steps 1 - 5 for ARM:COUNt number
If TRIG:SOUR IMM is set, the delay time between channel actuations is
60 msec. If another TRIG source is used and the time between triggers is at
least 60 msec, the scan advances when the trigger is received. If another
TRIG source is used and the time between triggers is <60 msec, a "Trigger
Ignored" error is generated.
To set pulsed output, connect CNFG 0 to GROUND and connect CNFG 2
to GROUND. (The CNFG 1 setting does not matter.) For pulsed output,
when a channel pair is opened or closed the SET or RESET current is
applied until the 30 msec timer indicates the channel has finished moving.
The current is then removed, and another 30 msec wait occurs. On a *RST,
up to six channel pairs may be actuated at a time. The scanning sequence for
36-channel mode with pulsed operation is:
Using the Relay Driver Module
35
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