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| 型号： | EQ-SFM-MAX-V1.3 |
| 厂商： | Equinox Technologies |
| 文件页数： | 60/85页 |
| 文件大小： | 0K |
| 描述： | MODULE FOR PPM3-MK2 I/O DRIVER |
| 标准包装： | 1 |
| 附件类型： | I/O 驱动器模块 |
| 适用于相关产品： | PPM3-MK2 |
| 产品目录页面： | 597 (CN2011-ZH PDF) |
| 其它名称： | 483-1013 |
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3.0 Serial Communications Ports
3.1 Overview
The PPM3 Programming Module can be controlled from any external device which supports either the
RS-232 or RS-485 hardware communications protocols. The Module features an RS-232 port which
can connect to a COM port of any suitable Control System such as a PC running the Equinox
EQTools software. This mode of operation is restricted to a single programmer channel.
In many medium to high volume production applications there is a requirement to run more than one
PPM3 programmer from the same PC COM port. This can be achieved by daisy-chaining up to 16
modules (using the RS-485 In/Out ports on each programmer) on an RS-485 bus and using an RS-
485 converter to convert the PC RS-232 COM port to the required RS-485 levels. The Equinox ISP-
PRO Software Suite is required to run the programmers in this mode.
The table below details the applications of both the RS-232 and RS-485 communications modes.
Fig. 3.1 PPM3 – Comparison of RS-232 / RS-485 Serial Communication Interfaces
Mode
Maximum
Programming
Programmer
Node
Serial
port
Description
channels
Address
RS-232
1
0
(can be
altered)
RS-232
port (3)
?
?
Single Channel RS-232 Operation
Set ‘Communications Mode
Switch’ to ‘RS-232’
?
?
?
Programmer connects to PC COM
port or other RS-232 Control
System via RS-232 cable.
Programmer Communications
Node Address is set to ‘0’
This is the factory default setting.
RS-485
16
0-15
RS-485
port
?
?
Multi-channel RS-485 operation
Set ‘Communications Mode
(4 & 5)
PPM3 MKII Programmer - User Guide - V1.04 - 10 th May 2008
?
?
?
?
Switch’ to ‘RS-485’
Allows up to 16 x PPM3 Modules
to be daisychained from one PC
COM port.
Requires an external RS-485
Converter
If more than one module is to be
connected to the same PC, then
the Equinox ISP-PRO Software
Suite is also required.
Programmer Communications
Node Address on each module
must be set to a unique address
between 0 and 15.
49
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