GE 90-30/20/Micro manual Sweep time calculation Sweep, PLC, Arraymove

Index

read folder name (#10), 4-151read I/O override status, 4-161

read last–logged fault table entry, 4-156read master checksum, 4-162

read PLC ID (#11), 4-152

read PLC run state (#12), 4-153read sweep time (#9), 4-150read window values (#2), 4-137reset watchdog timer (#8), 4-149shut down (stop) PLC, 4-154

Sweep time calculation, 2-6

Sweep, PLC, 2-2

application program logic scan, 2-8constant sweep time mode, 2-13,2-35housekeeping, 2-6

input scan, 2-7

logic program checksum calculation, 2-9logic solution, 2-8

output scan, 2-9

PCM communications with the PLC, 2-12programmer communications window, 2-9scan time contributions for 350 and 360 Series of CPUs, 2-5

standard program sweep mode, 2-2standard program sweep variations, 2-13STOP mode, 2-13

sweep time calculation, 2-6sweep time contribution, 2-4system communications window, 2-10

SY_FLT, 2-26

SY_PRES, 2-26

System communications window, 2-10System configuration mismatch, 3-10System operation, 2-1

clocks and timers, 2-34PLC sweep summary, 2-2

power-up and power-down sequences, 2-30program organization and user references/data, 2-16

Series 90-20 PLC I/O system, 2-38Series 90-30 PLC I/O system, 2-38system security, 2-36

System references, 3-5

System register references, 2-20System status references, 2-21,2-24

ADD_IOM, 2-25

ADD_SIO, 2-25

ANY_FLT, 2-26

APL_FLT, 2-25

BAD_PWD, 2-26

BAD_RAM, 2-26

CFG_MM, 2-25

HRD_CPU, 2-25

HRD_FLT, 2-26

HRD_SIO, 2-25

IO_FLT, 2-26

IO_PRES, 2-26

LOS_IOM, 2-25

LOS_SIO, 2-25

LOW_BAT, 2-25

OV_SWP, 2-25

PB_SUM, 2-25

SFT_CPU, 2-26

SFT_FLT, 2-26

SFT_SIO, 2-25

SNPX_RD, 2-25

SNPX_WT, 2-25

SNPXACT, 2-25

STOR_ER, 2-26

SY_FLT, 2-26

SY_PRES, 2-26

T

Table functions, 4-86

ARRAY_MOVE, 4-87

search less than or equal function, 4-91SRCH_EQ, 4-91

SRCH_GE, 4-91

SRCH_GT, 4-91

SRCH_LT, 4-91

SRCH_NE, 4-91

TAN, 4-35

Tangent function, 4-35

Temporary references, discrete, 2-21Time-of-day clock, 2-34

Timers, 2-34,4-9

constant sweep timer, 2-35function block data, 4-9OFDT, 4-17

ONDTR, 4-11time–tick contacts, 2-35TMR, 4-14Watchdog timer, 2-35

Time-tick contacts, 2-35

Timing, instruction, A-1

TMR, 4-14

Transitions, 2-21

Troubleshooting, 3-1

accessing additional fault information, 3-6I/O fault table, 3-5

I/O fault table explanations, 3-17interpreting a fault, B-1non-configurable faults, 3-8PLC fault table, 3-5

PLC fault table explanations, 3-7

TRUN, 4-105

Truncate function, 4-105

U

Up counter, 4-20

UPCTR, 4-20

Index-8 Series 90-30/20/Micro Programmable Controllers Reference Manual–September 1998 GFK-0467K