extern int modbus[128];
#define dsk_LOAD 6
#define Commands modbus[127]
#define sens_data (modbus+24)
#define DAC_go modbus[0x50]
#define DAC_stop modbus[0x51]
#define DAC_min() modbus[0x79]
#define DAC_max() modbus[0x78]
#define DAC_cal() modbus[0x7A]
#define DAC_04 modbus[0x6F]
#define DAC_20 modbus[0x6E]