Thank you for sending me a copy of the manual for the R221A08 8-channel RS232 Relay Board.
Would you please describe the operation of the “Interlock” function? I can not figure that out.
Also, the manual describes ASCII commands. I have not been able to make these work. Are these available for the R221A08? I can make the hex format commands work. But I do not find a “All Open” or “All Close” command in the hex format. Are these valid commands?Answer : 1 The R221A08 does not support ASCII commands. 2 It does not have an "All Open" or "All Close" command. 3 "Interlock" refers to a function where only one relay can be activated at a time.
