Brother BAS-311F-0 Instruction Manual page 211

Chapter 4 Extended Option Output
Example 3 of extended option output
Signal for peripheral equipment
When the machine is connected to an external programmable controller, this is a sequence
example for issuing timing signals.
Option output 4
Option output 5
Option output 6
Timing chart
Program setting value
210
READY Signal ready for sewing
END Signal of sewing completion
THBK Signal of detecting thread breakage
Programmer