Enable IO-Link Ports on Balluff Modbus TCP IO-Link Master

IO-Link Port Configuration on a Balluff Modbus TCP IO-Link master module is located in specific Modbus register for each M12 port.  There are 6 Modbus registers for each M12 port on the Balluff IO-Link master, starting at the following Modbus registers:

9100-9105 for Port X01

9200-9205 for Port X02

9300-9305 for Port X03

9400-9405 for Port X04

9500-9505 for Port X05

9600-9605 for Port X06

9700-9705 for Port X07

9800-9805 for Port X08

The Modbus registers are broken down to the following.  The 'n' represents each port on the IO-Link Modbus TCP master.

9n00 Byte 0 is the Master Cycle Time, Byte 1 is reserved

9n01 Byte 0 configures Pin 2 Port Mode.  A value of 0 deactivates the port.  A value of 1 sets up Pin 2 as a Digital Input.  A value of 2 sets up Pin 2 as a Digital Output.

9n01 Byte 1 configures Pin 4 Port Mode.  A value of 0 deactivates the port.  A value of 1 sets up Pin 4 as IO-Link manual.  A value of 2 sets up Pin 4 as IO-Link autostart.  A value of 3 sets up Pin 4 as a Digital Input.  A value of 4 sets up Pin 4 as a Digital Output.

9n02 Byte 0 configures the Validation ID Type on the Port.  A value of 0 sets up No Device Check.  A value of 1 sets up the port to be Compatible V1.0 IO-Link device. A value of 2 sets up the port to be Compatible V1.1 IO-Link device.  A value of 3 sets up the Port for Backup and Restore.  A value of 4 sets up the Port for Restore.

9n03 is the Vendor ID of the IO-Link device.  This is used when Validation ID is setup for a device check and backup and restore features of the IO-Link device.

9n04 Byte 0 is used for the most significant byte (MSB)  of the Device ID of the IO-Link device.

9n04 Byte 1 is the second byte of the Device ID of the IO-Link device.

9n05 is used for the least significant byte (LSB) of the Device ID of the IO-Link device.