AC 700F shows I/O Bus error after downgrade to V9.1 Rollup1a with TC9 ?
After downgrading an AC700 revision B CPU to Freelance Version 9.1 rollup 1 a with TC9
The LCD on the PM783 shows I/O error? Does anyone know what the cause is?
I suppose the IO firmware my also be an issuse here bu tcan anyone confirm?
As of Version 9.2, 4 new I/O module types of S700 are supported as direct I/O:
• DX 731F - 230/120VAC input + relay output (8 in and 4 out)
• DX 722F - 24V input + relay output (8 in and 8 out)
• AO 723F - analog output (16 out)
• AI 731F - analog in incl. THC thermocouple (8 in)
In case you use any of those modules, downgrading to 9.1 could create an I/O error I guess.