Parallel Bus (I-8K  Series) VS Serial Bus (I-87K  Series) I/O Modules

There are two types of I/O communication bus, parallel bus and serial bus. The parallel bus type I/O modules (high profile I-8K series) are high speed ones used only in the PACs including XPAC, WinPAC, iPAC, ViewPAC, etc. And the serial bus type I/O modules (high profile I-87K series) are low speed ones used in both PACs including XPAC, WinPAC, iPAC, ViewPAC, etc., and I/O expansion units including RU87Pn, ET-87Pn, USB-87Pn, etc.

A Comparison Between I-8KW Series and I-87KW Series

Models I-8K Series I-87KRW Series I-87K Series
Communication Interface Parallel bus Serial bus
Protocol - DCON
DI with latched function - Yes
DI with counter input - Yes (100 Hz)
Power on value - Yes Yes
Safe value - Yes Yes
Programmable slew-rate for AO module - Yes

High Profile VS Low Profile

With different form factor, I/O modules can be classified to high profile and low profile. Basically, high profile and low profile modules that with same item number also have same I/O channel number.

For example: I-8054 and I-8054W both has 8 DI and 8 DO.

I/O Modules for Supported PAC/ViewPAC

There are two types of I/O modules, Parallel and Serial. The I-8K series modules are high-speed modules with parallel interface and the I-87K series are serial interface modules. Both they are supported on PAC (Programmable Automation Controller) units listed in the following table.

OS PAC/ViewPAC Series I-8K Series I-87K Series
High Profile Low Profile High Profile Low Profile
WES7 XP-8000-WES7 Yes - Yes -
WES iPPC with I/O Slot(s) Yes - Yes -
WinCE WP-8000-CE7/WP-8000 Yes - Yes -
XP-8000-CE6 Yes - Yes -
WinCE ViewPAC  with I/O Slot(s) Yes - Yes -
Linux LP-8000 Yes - Yes -
LX-8000 Yes - Yes -
MiniOS7 iP-8000 Yes - Yes -
I-8000 Yes Yes Yes Yes
MiniOS7 ViewPAC  with I/O Slot(s) Yes - Yes -

I/O Modules for Supported Remote I/O Expansion Units

The high-speed I-8K series are parallel interface modules and I-87K series are serial interface modules. Both they are supported on PAC-base slave I/O unit. But only I-87K series modules are supported on expansion I/O units like I-87Kn, ET-87Pn, RU-87Pn and USB-87Pn series units.

Protocol I/O Expansion Units Interface I-8K Series I-87K Series
High Profile Low Profile High Profile Low Profile
DCON RU-87Pn RS-485 - - Yes -
ET-87Pn Ethernet - - Yes -
USB-87Pn USB - - Yes -
I-87Kn RS-485 - - Yes Yes
I-8KEn Ethernet, RS-485 Yes Yes Yes Yes
Modbus RTU iP-8000-MRTU RS-485 Yes - Yes -
Modbus TCP iP-8000-MTCP Ethernet, RS-485 Yes - Yes -
ET-8KPn-MTCP Yes - Yes -
I-8KEn-MTCP Yes Yes Yes Yes
Modbus RTU, Modbus TCP ET-87Pn-MTCP Ethernet - - Yes -
Voltage/Current/Sensor Input Module
Model Analog Input
I-8K I-87K Channel Resolution Sampling Rate Voltage Input Current Input Sensor Input
I-8014CW
 
- 8 16-bit 250/45/25 kHz - ±20 mA -
I-8014W
 
8/16 ±1.25 V, ±2.5 V,
±5 V, ±10 V
- I-87017W-A5 8 16-bit 10/50 Hz ±50 VDC,
±150 VDC
- -
I-87017W-RMS 16-bit 10 Hz 0 ~ 1 Vrms, 0 ~ 5 Vrms,
0 ~ 10 Vrms, 0 ~ 150 mVrms,
0 ~ 500 mVrms,
I-8017HW - 8/16 14-bit 90/16 kHz ±1.25 V,
±2.5 V,
±5 V,
±10 V
±20 mA -
I-8017HCW
I-8017DW
- I-87017RCW 8 16-bit 10/60 Hz - 0 ~ +20 mA,
+4 ~ +20 mA,
±20 mA
-
I-87017W ±0.5 VDC, ±1 VDC,
±5 VDC, ±10 VDC, ±150 mV
I-87017RW
I-87017DW 8/16
I-87017ZW 10/20 16-bit 10/50 Hz
I-8018W/S1 - 8 16-bit 100 Hz (per Channel) - - Thermocouple
(J, K, T, E, R, S, B,
N, C, L, M, LDIN43710)
I-8018W-16/S1 16
- I-87018W 8 16-bit 10 Hz ±1 V,
±2.5 V,
±15 mV,
±50 mV,
±100 mV,
±500 mV
±20 mA
I-87018RW
I-87018PW-G/S 0 ~ +20 mA,
+4 ~ +20 mA,
±20 mA
I-87018ZW-G/S 10
I-87018ZW-G/S2
- I-87019RW 8 16-bit 8 Hz ±1 V, ±2.5 V,
±5 V, ±10 V,
±15 mV, ±50 mV,
±100 mV, ±150 mV,
±500 mV,
±20 mA
I-87019PW-G/S 0 ~ +20 mA,
+4 ~ +20 mA,
±20 mA
I-87019ZW-G/S 10
I-87019ZW-G/S2
- I-87004W 4 12-bit 1 Hz - - 2/3-wire DS18B20
- I-87005W(*) 8 16-bit 8 Hz 2-Wire Thermistor
(Precon ST-A3, Fenwell U,
YSI L100, YSI L300,
YSI L1000, YSI B2252,
YSI B3000, YSI B5000,
YSI B6000, YSI B10000,
YSI H10000, YSI H30000,
User-defined)
- I-87013W 4 16-bit 10 Hz - - 2/3/4-Wire RTD
(Pt100, Pt1000, Cu50, Ni120)
I-8015W - 8 85 Hz
(per channel)
I-8015W-12 12
- I-87015W 7 12 Hz 2/3-Wire RTD
(Pt100, Pt1000, Ni120, Cu50,
Cu100, Cu1000, Ni120)
I-87015PW
- I-87016W(*) 2 16-bit 10 Hz - - Strain Gauge (Full-bridge,
Half-bridge, Quarter-bridge)
*I-87016W-G extra with 2 DI and 2 DO
*I-87005W-G extra with 8  DO
 
Voltage and Current Output Module
Model Analog Output
I-8K I-87K Channel Resolution Voltage Output Current Output Current Output Wiring
I-8024W - 4 14-bit ±10 V 0 ~ +20 mA Sink
- I-87022W 2 12-bit 0 ~ 10 V 0 ~ +20 mA,
+4 ~ +20 mA
I-87024DW 4 14-bit 0 ~ +5 VDC, ±5 VDC,
0 ~ +10 VDC, ±10 VDC
I-87024W
I-87024RW
I-8024UW I-87024UW 16-bit Source
I-8028UW I-87028UW 8
- I-87024CW 4 12-bit - Sink
I-87028CW 8
I-87028CDW
I-87028VW 0 ~ +10 VDC - -
I-87028VW-20V 0 ~ +20 VDC
 
 
Multifunction I/O Module
Model Analog Input Analog Output Digital Input Digital Output
I-8K I-87K Channel Resolution Sampling Rate Input Range Channel Output Range Channel Channel
I-8026W - 6 12-bit 9 kHz ±1.25 V,
±2.5 V,
±5 V,
±10 V,
±20 mA
2 0 ~ +5 VDC,
±5 VDC,
0 ~ +10 VDC,
±10 VDC
0 ~ +20 mA
2 2
- I-87026PW 16-bit 10/60 Hz ±150 mV, ±500 mV,
±1 VDC, ±5 VDC,
±10 VDC, ±20 mA
0 ~ +20 mA,
+4 ~ +20 mA
0 ~ +5 VDC,
±5 VDC,
0 ~ +10 VDC,
±10 VDC
0 ~ +20 mA
+4 ~ +20 mA
I-87016W 2 16-bit 10 Hz ±15 mV, ±50 mV,
±100 mV, ±500 mV,
±1 VDC, ±2.5 VDC,
±20 mA
Strain Gauge
1 Excitation Voltage Output
0 ~ +10 VDC
 
DC Digital I/O Module
Model DO DI
I-8K I-87K Channel Type Sink/Source
(NPN/PNP)
Max. Load Current Channel Type Sink/Source
(NPN/PNP)
- I-87037W-G
 
16 Open Emitter Source (PNP) 700 mA/channel - - -
I-8037W-G - Open Collector 100 mA/channel
I-8041AW-G
 
- 32
I-8041W-G
 
I-87041W-G
 
Sink (NPN)
I-8041PW-G
 
- I-87041PW-G
 
200 mA/channel
I-8056W-G
 
- 16 100 mA/channel
I-8057W-G
 
I-87057W-G
 
I-8057PW-G
 
- I-87057PW-G
 
700 mA/channel
I-8042W-G
 
I-87042W-G
 
100 mA/channel 16 Wet Sink/Source
(NPN/PNP)
I-8050W-G
 
- 16
(Bi-dir)
16
(Bi-dir)
Sink
I-8054W-G
 
I-87054W-G
 
8 700 mA/channel 8 Sink/Source
(NPN/PNP)
I-8055W-G
 
I-87055W-G
 
100 mA/channel Dry Source (PNP)
I-8040W-G
 
I-87040W-G
 
- - - - 32 Wet Sink/Source
(NPN/PNP)
I-8040W-A1-G
 
-
 
I-8040PW-G
 
I-87040PW-G
 
I-8046W-G
 
I-87046W-G
 
16 Dry Source (PNP)
I-8048W-G
 
- 8 Wet, Dry Sink/Source
(NPN/PNP)
I-8051W-G
 
I-87051W-G
 
16 Dry Source (PNP)
I-8052W-G
 
I-87052W-G
 
8 Wet Sink/Source
(NPN/PNP)
I-8053W-G
 
- 16
I-8053W-A1-G
 
I-8053PW-G
 
- I-87053W-G
 
Wet, Dry Sink/Source
(NPN/PNP)
I-87053PW-G
 
I-87053W-A2-G
 
I-87053W-A5-G
 
I-87053W-E5-G
 
Wet Sink (NPN)
 
 
AC Digital I/O Module
Model Channel AC Frequency ON Level OFF Level Input Impedance
I-8K I-87K
- I-87053W-AC1-G 16 47 ~ 400 Hz 10 ~ 80 VAC 3 VAC Max. 10 kOhm, 0.66 W
I-87059W-G 8 50 ~ 400 Hz 10 kOhm, 1 W
I-8058W-G I-87058W-G 80 ~250 VAC 30 VAC Max. 68 kOhm, 1 W
 
 
Relay Output and Digital Input Module
Model DO DI
I-8K I-87K Channel Relay Type Max. Load Current Channel Type Sink/Source
(NPN/PNP)
I-8060W-G
 
- 6 Power Relay Form C 2 A/channel - - -
I-8063W-G I-87063W-G 4 5 A/channel 4 Wet Sink/Source
(NPN/PNP)
- I-87061W-G
 
16 Form A 2.5 A/channel - - -
I-87061PW-G
 
3 A/channel
I-8064W-G
 
I-87064W-G
 
8 5 A/channel
I-8068W-G
 
- Form A × 4
Form C × 4
- I-87068W-2A-G 2 A/channel
I-87068W-G
 
8 A/channel
I-87065W-G
 
AC SSR Form A 1 A/channel
I-87066W-G
 
DC SSR
I-87069W-G
 
PhotoMOS Relay 0.13 A/channel
I-8069W-G
 
I-87069PW-G
 
1 A/channel
 
Counter/Frequency/Encoder Input Module
Model Counter/Frequency/Encoder Input DO
I-8K I-87K Channel/Axis Encoder Counter Frequency Counting Rate Channel Type
I-8088W-G - 8 DI - - - - 8 PWM: TTL
- I-87088W-G 8 Up 1 MHz Max.
I-87088W-G/S PWM: Open Collector
I-87082W-G 2 - Yes 100 kHz Max. 2 Open Collector
I-8084W-G I-87084W-G 4/8 CW/CCW, Pulse/Dir, 
A/B Phase
Up、
Up/Down
1 MHz Max. - -
 
 
Motion Control Module
Model Motor Control Output Encoder Input Added Function
I-8K Axis Signal Pulse Output Rate Resolution Axis Signal Counting Rate
I-8091W-G (*) 2 CW/CCW、Pulse/Dir 1 MHz Max. 32-bit - - - -
I-8092F-G (*) 4 MHz Max. 2 A/B Phase Up/Down 4 MHz Max. 128 DI/128 DO
Expandable
I-8094F-G (*) 4 4
I-8094A-G (*) CPU Inside
I-8094H-G (*) CPU Inside、
128 DI/128 DO
Expandable
I-8196F
 
6 CW/CCW, Pulse/Dir, 
A/B Phase
6 12 MHz Max. 12 DI/3 DO、
128 DI/128 DO
Expandable
I-8094-G (*) 4 CW/CCW, Pulse/Dir 4 4 MHz Max. -
I-8093W-G (*) - - - - 3 CW/CCW, Pulse/Dir, 
AB Phase
I-8090W-G (*) 1 MHz Max.
* I-8090W-G can be used with ISaGRAF or iPAC-8000 only 
* I-8091W-G can be used with ISaGRAF or iPAC-8000 only
* I-8092F-G can be used with ISaGRAF in XPAC, WinPAC, I-8000, iPAC-8000.
* I-8094 can be used with ISaGRAF in XPAC, WinPAC, LinPAC, I-8000, iPAC-8000.
* I-8094F-G can be used with ISaGRAF in XPAC, WinPAC, LinPAC, I-8000, iPAC-8000.
* I-8094A-G can be used with I-8000 only.
* I-8094H-G can be used with I-8000 only.
Serial Communication Module
Model Interface Baudrate Field to Logic Isolation FIFO
I-8K Port Type
I-8112iW-G
 
2 9-wire RS-232 115200 bps Max. Yes 128 bytes
I-8114W-G
 
4 -
I-8114iW-G
 
5-wire RS-232 Yes
I-8142iW-G
 
2 RS-422/RS-485
I-8144iW-G
 
4
 
 
Serial Communication Module
Model Interface
I-8K Connectors Transmission Speed Auto MDI/MDI-X Standard
I-8135W-G
 
5 x RJ-45 10/100 Mbps Yes IEEE 802.3, 802.3u, 802.3x
 
GPS Module
Model GPS Receiver GPS Output Digital Output
I-8K I-87K Support Channel Protocol RS-232 Interface PPS Channel Channel Type
GPS Time Synchronization Module
I-8211W-G - 32 NMEA 0183 version 3.01 1 1 - -
GPS Receiver Module
- I-87211W-G 32 NMEA 0183 version 3.01 1 1 2 Open Collector
 
 
CAN Bus Module
Model Channel Protocol Baudrate Specification
I-8K I-87K
I-8120W-G
 
I-87120-G
 
1 DeviceNet, CANopen, CAN, J1939 10 k, 20 k, 50 k, 125 k,
250 k, 500 k, 800 k, 1 M
ISO-11898-2, CAN 2.0A and CAN 2.0B
I-8123W-G
 
I-87123-G
 
CANopen CiA-301 v4.02, CiA-402 v1.1
I-8124W-G
 
I-87124-G
 
DeviceNet
Volumn I ver2.0,
Volumn II ver2.0
125 k, 250 k, 500 k
 
 
FRnet Module
Model Interface Baudrate Field to Logic Isolation FIFO
I-8K Port Type
I-8172W-G
 
2 FRnet 1 Mbps Max. Yes Yes
 
 
HART Module
Model Analog Input
I-87K Channel Voltage Input Current Input Sensor Resolution
I-87H17W-G
 
8 - +4 ~ +20 mA - 16-bit
 
 
High profile blank I/O Module
Model Description
4SIPP-801W-CAG High profile blank I/O module
 
Vibration Input I/O Module
Model Vibration Input
I-87K Channel Type Range
I-87089W-G
 
1 Vibrating Wire Input 450 ~ 6000 Hz
I-87089W-G/S
 
8