1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

Index 683programmable limit switch file 132programming device 674programming instructions 91proportional integral derivativeapplication notes 351PID instruction 332PID tuning 356runtime errors 349the PID concept 329the PID equation 330protocol 674DF1 full-duplex 592DF1 half-duplex 593DF1 radio modem 604DH485 communication 588Modbus RTU 611protocol configuration 587, 629PTOfunction file 143instruction 139Quick Start example 629publications, related 14pulse train outputfunction file 143instruction 139Quick Start example 629pulse width modulationfunction file 159instruction 158Quick Start example 632Purpose of this Manual 13PWMfunction file 159instruction 158Quick Start example 632Qquadrature encoder 122queue 511RRAC instruction 131RAD instruction 225RCP instruction 511read 674real time clockaccuracy 58battery low indicator bit 58disabling 58function file 57real-time clockQuick Start example 644real-time clock adjust instruction 60recipe 511recipe instruction 511REF instruction 306refresh instruction 306related publications 14relay 674relay logic 674relay-type instructions 167remote messages 439remote packet support 591RES instruction 186reserved bit 675reset accumulated value instruction 131reset instruction 186restore 674RET instruction 299retentive data 675retentive data lost status bit 564retentive timer on-delay instruction 181return from subroutine instruction 299RS-232, definition 675RTA instruction 59RTCday of month status 572day of week status 573function file 57hours status 572minutes status 572month status 571Quick Start example 644seconds status 573year status 571RTC SynchronizationQuick Start example 647RTC synchronizationQuick Start example 647RTO instruction 181RTU, definition 675run mode 675rung 675Ssave 675SBR instruction 298Publication 1766-RM001A-EN-P - October 2008