ICP DAS USA I-87K Series, User Manual

Page: 4 / 31

87K4/5/8/9 RS-485 I/O Expansion Unit ----- 4
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)