SCL Mode
Download the Host Command Reference here
This sets the power up mode for the drive to the correct setting for use with SCL applications.
SCL is Applied Motion’s host command language for applications that require the drives to be sent instructions by a host controller in real time. With SCL, the drives can be operated in both RS-232 and RS-485 mode, the RS-485 option allows you to have multi-axis multi-drop applications with the drives ”daisy chained” on one serial link. When this option is selected you will need to set an address for each drive you are working with.
SCL Address

If you plan to use the SCL mode with RS-485 communications you
will need to set the address for each drive in your system. Simply select the
address character and perform a download, in this way up to 32 drives can be
connected together on a single serial link.
Refer to the SCL manual for more information on how to send commands to drives on a multi-axis serial link.
Transmit Delay
If you are using a two wire RS-485 system, the drive(s) and the host both transmit data on the same pair of wires. You may need to adjust the transmit delay so that the drive gives your host time to disable its RS-485 driver before responding to a command. Otherwise you may have trouble receiving data from the drive. This is not a problem for RS-232 or four wire RS-485 applications because those systems have separate wires for transmitting data in each direction.