ML1200 with AMCI 3102

Greetings Plcple
First post here. Begging pardon in advance.

Any help with the following would be much appreciated.

A 3 axis program was once built which multiplexed the single PTO on a ML1200 to three Automation Direct stepper motor controllers. The system performed as expected except for the need for simultaneous axis motion. An AMCI 3102 was retrofitted and now supplies pulses only, in step/dir mode, not utilizing any other 3102 discrete I/O. Motion now includes an unacceptable 3 to 4 second (3000 to 4000 ms) delay between moves which was not present in the multiplexed PTO version.
Help? Illucidation? Comment?
All would be welcomed.
Thanks

I have found the AMCI units to be reliable once configured, but the ladder logic programming can be complex. What's going on in the program during that 3-4 second delay? Does the AMCI card indicate that motion is still in progress? (I usually monitor the CW Motion and CCW Motion bits to determine when a move is done.)

Thanks kolyur
AMCI responded quickly and said it was my configuration error.

"The reason that you are seeing the long delays between the moves is that you have the starting speed parameter set to 1 step / sec. The starting speed defines the frequency of the first and last pulse of your move. With the starting speed set to 1 step / sec, the first and last pulses have a frequency of 1Hz and a period of 1 second.

All you will need to do is increase the starting speed in [your configuration files], cycle power to the PLC to send the new configuration data to the 3102 module, and your delays should disappear.

The only requirement is that the starting speed must be lower than the speed of your slowest move. A starting speed of between 50 and 100 is usually a good place to start.
. . . . "

They were very helpful.
And thank you too.