APX-3302 User's Manual (OM110000019A)
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2. RS422 Level Input Terminal
26LS32
Enc.A+
Enc.B+
Enc.Z+
Diff+
Extension connector CN6
100
Ω
Internal circuit
Enc.A-
Enc.B-
Enc.Z-
Diff-
Extension connector CN6
Figure6-13: RS422 input terminal
When you use external trigger
Input the "L" level stabilized more than the period of at least 25 uS(s).
In an intact RS422 input, an input level becomes unfixed.
If external triggering is validated in the unfixed state, a trigger may occur to unexpected
timing. When you do not use a RS422 input, be sure to set up external triggering
invalid.
■
The setting example for software
The sample code for using RS-422 signal is as follows.
In this example, External trigger mode is set as continuation external trigger mode
(CC signal is outputted whenever it detects external trigger.)
<Sample code>
// Configure to use RS-422 signal
AcapSetInfo(hDev, INPUT_CH, ACL_EXT_EN, -1, 2);
// Continuation external trigger mode
AcapSetInfo(hDev, INPUT_CH, ACL_EXT_MODE, -1, 0);
// Reflect setting
AcapReflectParam(hDev, INPUT_CH)
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