An Overview of Gateway Mode

When in gateway mode, the drive will operate as shown in Table 1.

Controller
Communication option
Master Drive (Drive 0)
Slave Drives (Drives 1 to 4)

Table 1. Operation in Gateway Mode
Controller to Communication Option	Communication Option to Master Drive (Drive 0)	Master Drive (Drive 0) to Slave Drives (Drives 1 to 4)
The controller and card communicate in the format of each field bus communications protocol. Drive 0 sends commands and monitors through normal field bus communications. The special registers of Drive 0 use read and write to send commands to and monitor Drives 1 to 4.	Field bus communication data is written to and read from the special registers of Drive 0.	Uses MEMOBUS communications. Drive 0 sends data from its special registers to Drives 1 to 4.

Note:

Energize the slave drive before you energize the master drive. If you energize the master drive first, the drive detects CE [Modbus Communication Error].