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FAQ

What is Modbus?

Jun 1st 2024

Modbus, initially developed in 1979, is one of the oldest, most widely used industrial communications protocols. Traditionally, Modbus was/is implemented using RS-232 … View More
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FAQ

Raw Mode or Bit-Shift Mode

Oct 11th 2022

Raw mode is actually the simplest form of communication. The card takes every bit of data that’s received from the communication line, groups it into 8 bit bytes … View More
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FAQ

FAQ: Blue Iris

Aug 31st 2022

Sealevel’s SeaI/O and eI/O devices are frequently used in conjunction with Blue Iris Video Management Software. Many customers have been able to successfully utilize … View More
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FAQ

Bisynchronous communications

Aug 30th 2022

Bisynchronous communications have a 16-bit synchronization sequence at the beginning of the message. The rest of the message is formatted using characters like start … View More
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FAQ

Monosynchronus Communications

Aug 16th 2022

Monosync communications, as the name implies, has one sync character, 1 8-bit scene character.The problem with this is the fact that an 8-bit sequence can very easily … View More