ICP DAS USA ET-6000 Series User Manual page 179

ГК Атлант Инжиниринг – официальный представитель в РФ и СНГ
+7(495)109-02-08 sales@bbrc.ru www.bbrc.ru
Appendix E: Application Notes
Digital Input High/Low Latch
DI Latch Clear ALL Clear ALL Latch Status Latch Status
Enable Latch
Function Latch (High) Latch (Low) (High) (Low)
Address 00350 00080 00081 10080~1XXXX 10160~1XXXX
XXXX: Depends on the type of ET-6000 series module
For example: The user connects a key switch to the digital input channel of a digital input
module and wants to read the keystrokes. The key input is a pulse digital input signal, and the
user will miss the stroke. When reading the DI status for DI address 10000 by Modbus
command 02 in A and B position, the response will be that
no keystroke has been made and the keystroke information will be lost. In contrast, reading
the latched low digital input at DI address 10160 using Modbus command 02 will solve this
problem. When issuing 02 command in A and B position, the response denotes that there has
been a low pulse between the A and B position indicating a keystroke.
Configuration via the Web page
6PH-002-11----------177 
ET-6000 User's Manual, 2007, Sep., V1.1,