Modbus RS485 Stepper Drive User Manual
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When CTRG is on, SI1 and SI2 are off, the path 0 is triggered;
When CTRG and SI1are on, and SI2 is off, the path 1 is triggered;
When CTRG and SI2 are on, and SI1 is off, the path 2 is triggered;
When CTRG, SI1 and SI2 are all on, the path 3 is triggered.
As shown in the table below, on means signal input on,off means signal input off
IO/running path
SI1
(ADD0)
SI2
(ADD1)
SI5
(CTRG)
Path 0
off
off
on
Path 1
on
off
on
Path 2
off
on
on
Path 3
on
on
on
5.5.2 IO Combination Trigger
The configuration is done by the parameter Pr8.26 Combination trigger mode. With the IO combination trigger, there
is no need to set one digital input as the trigger signal (CTRG), which saves IO port and makes the control simpler.
After programming the path number, the path can be triggered directly by ADD0-ADD3. (In this mode, PR0 is not
available.) The parameter Pr8.26=2 enables this function.
Par. #
Register
address
Definition
Description
Pr8.26
0x601A
IO combination
trigger method
0: Turn off IO combination trigger
1: Enable IO combination trigger, return to zero OK to be
effective
2: Enable IO combination trigger, no need to return to zero
For example: 3-Segment PR Path
Path configuration example:
SI1 is set to enable input by default, normally closed.
SI2 is set to ADD0, normally closed, means ADD0 is “on”.
After triggering SI3, then SI2, SI3, SI4 are “on, on, off”, the path 3 is triggered.
After triggering SI3 and SI4, then SI2, SI3, SI4 are “on, on, on”, the path 7 is triggered.
If SI2 and SI3 are “off”, and only SI1 is “on”, the path 1 is triggered. If the velocity of path 1 is 0, i.e. the motor
stops immediately.
Path number
SI2(ADD0)
SI3(ADD1)
SI4(ADD2)
Path 1
ON
OFF
OFF
Path 2
OFF
ON
OFF
Path 3
ON
ON
OFF
Path 4
OFF
OFF
ON
Path 5
ON
OFF
ON
Path 6
OFF
ON
ON
Path 7
ON
ON
ON
Note: “on” the input signal optocoupler on, “off”means signal optocoupler off.
5.5.3 Fixed Trigger
Fixed trigger mode is after configuring homing and path (less than 16-segment), then use Pr8.02( 0x6002) to start
the operation path which replace IO functions of CTRG and HOME. This method is suitable for systems with fixed
and simple motion. (Recommended).
Steps as below:
