|HSC||Constant (0,1,2,3,4, or 5)||BYTE|
|MODE||Constant (0,1,2,3,4,5,6,7,8,9,10, or 11)||BYTE|
|Memory Ranges||ENO||Errors||Instruction Support for S7-200 CPUs||SIMATIC/International Mnemonics|
|The High-Speed Counter Definition (HDEF) instruction assigns a MODE to the referenced high-speed counter (HSC).
PLC 221 and PLC 222 do not support HSC1 and HSC2.
Only one HDEF box may be used per counter.
Error Conditions that Set ENO = 0:
SM4.3 (run-time), 0003 (input point conflict), 0004 (illegal instruction in interrupt), 000A (HSC redefinition)