ICP DAS USA PET-7060, Руководство пользователя

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Chapter 1 Introduction
PET-7000 DIO User Manual, May 2009, V1.00, EMH-013-10----------
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I/O Pair Connection
This function is used to create a DI to DO pair through the Ethernet. Once the
configuration is complete, the PET-7000 module can poll the status of remote DI
status with the Modbus/TCP protocol and continuously write to the paired local DO
channels in the background.
Communication Security
An account and a password for the account are needed when logging into the
PET-7000 web server. An IP address filter is also included for limiting authority of
connecting with the PET-7000.
Modbus protocol
z
The Modbus/TCP slave function can be used to provide data to remote SCADA
software through the Ethernet port.
Built-in Multi-function I/O
All Digital Output modules provide:
z
Power on value (On boot up, the DO status is set to the Power-on value)
z
Safe value (If Modbus/TCP communication is lost for a specified period, the DO
status is set to the safe value)
All Digital Input modules provide:
z
High/Low latched status
z
DI channels can also be used as DI status and 32-bit low speed (500 Hz)
counters.