GE 90-30/20/Micro manual Gcm

2

Table 2-2. I/O Scan Time Contributions for the 90-30 350 and 360 Series (in milliseconds)

Module Type				CPU
			350 and 360 Series
		Main		Expansion	Remote
		Rack		Rack	Rack
8-point discrete input		.030		.055	.206
16-point discrete input		.030		.055	.206
32-point discrete input		.043		.073	.269
8-point discrete output		.030		.053	.197
16-point discrete output		.030		.053	.197
32-point discrete output		.042		.070	.259
Combination discrete input/output		.060		.112	.405
4-channel analog input		.075		.105	.396
2-channel analog output		.058		.114	.402
16-channel analog input		.978		1.446	3.999
(current or voltage)
8-channel analog output		1.274		1.988	4.472
Combination analog input/output		1.220		1.999	4.338
High Speed Counter		1.381		2.106	5.221
Power Mate APM (1-axis)		1.527		2.581	6.388
I/O Processor		1.574		2.402	6.388
Ethernet Interface (no connection)		.038		.041	.053
	no devices	.911		1.637	5.020
GCM
	8 64-word devices	8.826		16.932	21.179
	no devices	.567		.866	1.830
GCM+
	32 64-word devices	1.714		2.514	5.783
	no devices	.798		1.202	2.540
GBC
	32 64-word devices	18.382		25.377	70.777
	not configured, or	.476		N/A	N/A
	no application task
PCM 311
	read 128 %R as fast	.485		N/A	N/A
	as possible
ADC (no task)		.476		N/A	N/A
I/O Link Master	no devices	.569		.865	1.932
	16 64-point	4.948		7.003	19.908
	devices
I/O Link Slave	32-point	.087		.146	.553
	64-point	.154		.213	.789

GFK-0467K Chapter 2 System Operation 2-5