GI74 is a proprietary communication protocol that was first produced in 1974; however it has been retained due to the fact that it has proven
reliable in service and replacement part have been easy to obtain.
GI74 Application Layer
RS232 / V.24 (PCM)
Supported Information Types
Single indication [1 Bit]
Double indication [2 bit]
Measured value [8 bit]
Measured value [11 bit]
Tap position [5 bit]
PCM, half-duplex, 23 bit data words 1 start bit, 16 data bits, 5 CRC bits, 1 stop bit
Block or word interrogations of indications and measured values "Select before operate" transmission of commands
RTU address 1..255 depending on length (from 5 to 8 bits) Function address 0..15 Block address 0..7 Word address 0..7
Implemented Protocol Stacks
Universal protocol converter for highest degree of flexibility
Please note that the configurator is temporarily unavailable due to maintenance reasons.