GE 90-30/20/Micro manual End Instruction Service Request #7 Read #7 Set #14

A

Table A-1. Instruction Timing-Continued

Function		Enabled	Disabled	Increment	Enabled	Disabled	Increment
								Size
Group	Function	350/351/36x	350/351/36x	350/351/36x	352	352	352
	Search Less Than
	INT	37	0	1.52	37	0	1.52	19
	DINT	41	1	2.27	41	1	2.27	22
	BYTE	37	0	1.41	37	0	1.41	19
	WORD	37	0	1.52	37	0	1.52	19
	Search Less Than/Equal
	INT	38	0	1.48	38	0	1.48	19
	DINT	40	1	2.30	40	1	2.30	22
	BYTE	37	0	1.24	37	0	1.24	19
	WORD	38	0	1.48	38	0	1.48	19
Conversion	Convert to INT	19	1	–	19	1	–	10
	Convert to BCD-4	21	1	–	21	1	–	10
	Convert to REAL	27	0	–	21	0	–	8
	Convert to WORD	28	1	–	30	1	–	11
	Truncate to INT	32	0	–	32	0	–	11
	Truncate to DINT	63	0	–	31	0	–	11
Control	Call a Subroutine	72	1	–	73	1	–	7
	Do I/O	114	1	–	115	1	–	13
	PID – ISA Algorithm*	162	34	–	162	34	–	16
	PID – IND Algorithm*	146	34	–	146	34	–	16
	End Instruction	–	–	–	–	–	–	–
	Service Request
	#6	22	1	–	22	1	–	10
	#7 (Read)	75	1	–	75	1	–	10
	#7 (Set)	75	1	–	75	1	–	10
	#14	121	1	–	121	1	–	10
	#15	46	1	–	46	1	–	10
	#16	36	1	–	36	1	–	10
	#18	261	1	–	261	1	–	10
	#23	426	0	–	426	0	–	10
	#26//30**	2260	1	–	2260	1	–	10
	#29	20	0	–	20	0	–	10
	#43
	Nested MCR/ENDMCR	1	1	–	1	1	–	4
	Combined
	Sequential Event
	Recorder

*The PID times shown above are based on the 6.5 release of the 351 CPU.

**Service request #26/30 was measured using a high speed counter, 16-point output, in a 5-slot rack.

Notes: 1. Time (in microseconds) is based on Release 7 of Logicmaster 90-30/20/Micro software for 350 and 360 Series CPUs.

2.For table functions, increment is in units of length specified.; for bit operation functions, microseconds/bit.; for data move functions, microseconds/number of bits or words.

3.Enabled time for single length units of type %R, %AI, and %AQ.

4.COMMREQ time has been measured between CPU and HSC.

5.DOIO is the time to output values to discrete output module.

6.Where there is more than one possible case, the time indicated above represents the worst possible case.

7.For instructions that have an increment value, multiply the increment by (Length –1) and add that value to the base time.

GFK-0467K Appendix A Instruction Timing A-9