Basic Knowledge

From the functional point of view, I/Os on the robot controller are classified into Safety I/O, System I/O, User I/O, and Internal I/O.

Safety I/O

I/Os that are safety-related signals, such as emergency stop input, protective stop input.

System I/O

I/Os that the specific functions are allocated beforehand in order to start a robot program from the external device.

User I/O

I/Os that the customer can use freely.

Internal I/O

I/Os that the customer can use freely. However, Internal I/O cannot communicate with the external device, and can be used only in the robot program.

I/Os other than Safety I/O are allocated to each port number that can be accessed from PacScript.

The allocation of port numbers has been determined for each I/O device such as Digital I/O, Hand I/O, I/O option.

In addition, there are two types of allocations (assignment) for port numbers of System I/O, and each of them are as below.

Mini I/O dedicated allocation

Allocation for a field network slave terminal-unused application. This allocation has fewer I/O points and functions than standard allocation.

Standard allocation

Allocation for a field network slave terminal-used application. This allocation has more I/O points and functions than Mini I/O dedicated allocation.

Details

For details of above, refer to the following links.