ICP DAS USA I-87K Series User manual

87K4/5/8/9 RS-485 I/O Expansion Unit ----- 1
I-87KX SERIES
I/O EXPANSION UNIT
User’s Manual
Version 1.0
ICP DAS, Co., LTD www.icpdas.com

87K4/5/8/9 RS-485 I/O Expansion Unit ----- 2
87K4/87K5/87K8/87K9
Warranty
All products manufactured by ICP DAS are under warranty regarding defective materials for
a period of one year, starting from the date of delivery to the original purchaser.
Warning
ICP DAS assumes no liability for damages resulting from the use of this product. ICP DAS
reserves the right to change this manual at any time without notice. The information
furnished by ICP DAS is believed to be accurate and reliable. However, no responsibility is
assumed by ICP DAS for its use, nor for any infringements of patents or other rights of third
parties resulting from its use.
Copyright
Copyright 2005 by ICP DAS. All rights are reserved.
Trademark
The names used for identification only may be registered trademarks of their respective
companies.
All information about this manual is for items as the table below.
I-87K4 4-slot I/O Expansion Unit
I-87K5 5-slot I/O Expansion Unit
I-87K8 8-slot I/O Expansion Unit
I-87K9 9-slot I/O Expansion Unit

87K4/5/8/9 RS-485 I/O Expansion Unit ----- 3
Table of Contents
Chapter1. Introduction .........................................................................................................4
Chapter2. The Hardware of I/O Expansion unit ...................................................................5
2.1 87K4, 87K8:............................................................................................................5
2.2 87K5, 87K9:............................................................................................................6
Chapter3. Setup the Expansion unit and I/O modules. ......................................................10
3.1 Power Supplier: ....................................................................................................10
3.2 RS-485 Converter:................................................................................................11
3.3 The Wirings: .........................................................................................................12
3.4 I/O module installation: .........................................................................................13
Chapter4. Configure the I/O modules with DCON Utility....................................................17
4.1 Search 87K I/O with DCON Utility:........................................................................17
4.2 Search Result: ......................................................................................................19
4.3 To Configure i-87K I/O modules: ..........................................................................19
Appendix A: Dimensions....................................................................................................22
Appendix B: Frame Ground ...............................................................................................29
Appendix C: DCON Protocol and Software Development ToolKit (free)............................30

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Chapter1. Introduction
1. The 87K4/5/8/9 I/O Expansion unit is a plastic housing unit that provides one set power
unit (10 V ~ 30 V DC) and one RS-485 interface and can be shared by those 87K I/O
modules which are inserted into this I/O Expansion unit. This character can save time
on wiring for power and RS-485 interface between 87K I/O modules. (page 5 ~ 6)
2. The 87K4/5/8/9 I/O Expansion unit does not have RS-485 address, and all the 87K I/O
modules which inserted into this I/O Expansion unit have their own RS-485 address,
baud rate and checksum independently. (page 17)
3. To Configure the 87K I/O modules which are inserted into the 87K4/5/8/9 I/O Expansion
unit, it must install the DCON Utility first on PC (Windows 98/NT/2000/XP).
(page 15 ~17)
4. To communicate the 87K I/O modules, it must have RS-485 connection between PC
and 87K4/5/8/9 I/O Expansion unit. (page 9)
5. It must be one by one to configure the RS-485 address, baud rate and checksum
settings of 87K I/O modules to avoid the confliction of communication parameters.
(page 16)
6. It must adjust the INIT* pin to GND before change the baud rate and checksum settings.
(page 7 and 17)
7. It provides DIN Rail clips and Screw pores to mount the I/O Expansion unit. (page 14)
8. It provides Frame Ground for bypassing ESD. (page 27)
9. It provides various free tool kits for developing the application. (page 28 ~ 29)

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Chapter2. The Hardware of I/O Expansion unit
2.1 87K4, 87K8:
Init*
Power
RS-485
Slot0 Slot3
DATA-
RS-485
DATA+
10~30VDC
Input:
GND
+VS
0SlotUnit
Node
321
87K4
4 Slot I/O Expansion Unit
i-
Power
RS-485
Slot0 Slot7 Init*
UnitSlot01 23
Node
8 Slot I/O Expansion Unit
87K8
i-
+VS
GND
Input:
10~30VDC
DATA+
DATA-
RS-485
4 Slot
Node
765

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2.2 87K5, 87K9:
Init*
Power
RS-485
Slot0 Slot3
Slot4
DATA-
DATA+
GND
+VS
i-87K5
87K5
JP1: INIT* of Slot4
INIT* of Slot0 ~ Slot3
Power
RS-485
Slot0 Slot7 Init*
87K9
i-
+VS
GND
DATA+
DATA-
Slot8
INIT* of Slot0 ~ Slot7
87K9 JP1: INIT* of Slot8

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2.3 The INIT on the 87K4/5/8/9 I/O Expansion unit
When we need to change communication parameters ( baudrate 、checksum and
protocol etc ) on the module,INIT* pin need connects to GND on this module .The INIT*
pins of Slot0 to Slot7 are located at the right edge of i-87K I/O Expansion.
2.3.1 The INIT at the backplane
Note 1: When power on i-87K I/O Expansion, only one INIT*-Switch can be set to ON
(INIT* pin connects to GND) at the same time.
The table below shows how to map the INIT* pins to the slot I/O on i-87K I/O Expansion.
NOTE: The INIT* pin of slot 0 on i-87K5 and i-87K9 is set by internal JP1 as follows:
1 2 3 4 5 6 7 8
Slot-0=INIT* ON Off Off Off Off Off Off Off
Slot-1=INIT* Off ON Off Off Off Off Off Off
Slot-2=INIT* Off Off ON Off Off Off Off Off
Slot-3=INIT* Off Off Off
ON Off Off Off Off
Slot-4=INIT* Off Off Off Off ON Off Off Off
Slot-5=INIT* Off Off Off Off Off ON Off Off
Slot-6=INIT* Off Off Off Off Off Off ON Off
Slot-7=INIT* Off Off Off Off Off Off Off ON
Note 2: The INIT* pin of i-87K5 is located at Slot4, and i-87K9 is at Slot8. The diagram
below shows the INIT* pin location and how to use the jumper to short the INIT* to GND. If
the module at this slot needs to connect the INIT* to GND, it will be better to do this job at
another Slot

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Note 3: The Slot location (index of Slot) is not related to the Net Address of I/O modules, it
only indicates the relative position of module on i-87K I/O Expansion unit.
2.3.2 The INIT* of i-87K High Profile I/O module between new and old
backplane
Some of the I-87K High Profile series I/O modules have INIT Jumper on module itself.
The INIT Jumper is located at module’s PCB board, for example High Profile series I/O
module 87024W：
INIT Jumper i-87024W module

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And there are new i-87K I/O Expansion unit now.
The only difference between new and old i-87K I/O Expansion unit is that It must put the
INIT jumper at “INIT” position, if want to connect INIT* to GND, if i-87K high profile I/O
with INIT Jumper plug in old i-87K I/O Expansion unit.
If i-87K high and low profile I/O inserted in new i-87K I/O Expansion unit, all steps are the
same to connect INIT* to GND, that is to use the INIT dip switch at the right side of plastic
house.
Note: When i-87K high profile I/O module applies to new i-87K I/O Expansion unit, the INIT
jumper must put at “Normal” position or it will always be at INIT state.
The backplane version of i-87K I/O Expansion unit：
Old version New version
i-87k4/i-87k5 B841 Rev 4.3 before B841 Rev 4.4 later
i-87k8/i-87k9 B881 Rev 4.2 before B881 Rev 4.3 later
1. For the version of backplane, it is located the PCB board like below picture
The version of backplane B841 Rev 4.4

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Chapter3. Setup the Expansion unit and I/O modules.
The first thing is to make sure the I/O Expansion unit is correctly wired, the basic wiring
includes power supplier and communicate interface.
3.1 Power Supplier:
Please refer to: http://www.icpdas.com/products/Accessories/power_supply/power_list.htm
1. The power supply must be DC power between +10V to +30V.
2. Wiring: +Vs connects to +Vs; GND connects to GND.
3. Carefully calculate the total watts or current consumption of the system.
If the total watts were not enough, the system will become unstable and abnormal.
Total watts = Σ(supplied Voltage)*( Ampere consumed)

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3.2 RS-485 Converter:
87K4/5/8/9 I/O Expansion unit supports only i-87K and M-87K I/O modules. It does not
support i-8K series I/O module. The only communication interface of 87K4/5/8/9 I/O
Expansion unit is its RS-485 port.
So, it often needs a RS-232 to RS-485 converter such as 7520 to converter the RS-232
signal to RS-485.
For more detail about the converter selection guide, please refer to:
http://www.icpdas.com/products/Industrial/communication_module/communication_list.htm
For using the i-7520, please refer to:
http://ftp.icpdas.com.tw/pub/cd/8000cd/napdos/7000/manual/7520.pdf
For most personal computers also provide USB interface, it also can use 7561 (USB to
RS-232/422/485) converter.
Note: When use 7561 as USB to RS-232/422/485 converter, the computer must install the
USB driver first.
For USB Driver: ftp://ftp.icpdas.com.tw/pub/cd/8000cd/napdos/7000/756x/i-7561/

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3.3 The Wirings:

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3.4 I/O module installation:
Step1: Read the document at the following location
For I-87K series modules the files are located at:
CD:\ Napdos\DCON\IO_Module\hw_dcon_on_8KUnit\87k
ftp://ftp.icpdas.com/pub/cd/8000cd/napdos/dcon/io_module/hw_dcon_on_8kunit/87k/
These *.chm files include the I/O module specifications, pin assignments, wire connections.
For example, the pin assignments and wire connections are as follows.
Pin assignment

87K4/5/8/9 RS-485 I/O Expansion Unit ----- 14
Wire Connection

87K4/5/8/9 RS-485 I/O Expansion Unit ----- 15
Step2: Connect the wire Insert the I/O module into the 87K4/5/8/9 Expansion unit

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Step3: Mount the I/O unit
Method (a): using screw panel mounting
Method (a): using screw panel
Method (b): DIN-Rail mounting
DIN-Rail Clips
Frame Ground

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Chapter4. Configure the I/O modules with DCON Utility.
4.1 Search 87K I/O with DCON Utility:
DCON Utility is a program based on Serial interface I/O, it can search DCON Protocol and
Modbus RTU Protocol modules and support checksum disable and enable.
4.1.1 COM Port and Searching Conditions:
Step 1: Choose the COM port and select the searching parameters.
If user does not know the modules’ communication baud rate or the network consists of I/O
modules with different baud rates, it can choose multi baud rates, both checksum disable
and enable condition for searching condition.
If the response may have many characters or the module use low speed baud rate, it is
better to increase the timeout setting.

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4.1.2 Searching Principles:
Search and configure the I/O one by one. If there are several I/O modules with unknown
Net Address, Baud rate, Checksum and Protocol, they have to be searched and configured
one by one.
If failed to find the I/O module, it is better to Power on the I/O module with INIT* pin
connects to the GND to get the I/O module’s initial communication settings.
Initial communication settings of 7000 series and 87K series are list at the table below.
7000 series (i-7000 and M-7000) 87K series
Address 0 0
Baud rate 9600 115200
Checksum Disabled Disabled
Protocol DCON Protocol DCON Protocol
Note: The default settings and initial settings are different.
If the wirings are correctly connected and communication parameters are correct too.
Clicks to start searching.

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4.2 Search Result:
When use DCON Utility to search 87K4/5/8/9 I/O Expansion unit and the 87K I/O modules,
only 87K I/O modules can be found.
4.3 To Configure i-87K I/O modules:
There are DCON Protocol and Modbus Protocol I/O module, for most general settings, they
need to choose the wanted property and click setting to make it effect.
If attempted to change the Baud Rate, Checksum and Protocol, the INIT* pin needs to
connect to GND. After successfully configuring these properties, the I/O modules must be
reset the Power to bring the settings into effect.
For more detail about using DCON Utility to Configure I/O modules, please refer to the
CD:\NAPDOS\Driver\DCON_Utility\Manual or
ftp://ftp.icpdas.com.tw/pub/cd/8000cd/napdos/driver/dcon_utility/manual/

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There are some types of INIT* and they are at different position.
¾i-87K4, i-87K8 I/O Expansion unit:
The INIT* pins of Slot0 to Slot7 are located at the right edge of i-87K I/O Expansion.
¾i-87K5, i-87K9 I/O Expansion unit:
The INIT* pins of Slot0 to Slot7 are located at the right edge of i-87K I/O Expansion.
But the INIT* pins of slot4 for 87K5 and slot8 for 87K9 are located at the first slot of
Expansion unit.