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Therefore, AI instruments offer the function of alarm blocking at the beginning of power on. When Act is set to rEbA
or drbA, the corresponding low or high alarms are blocked until the alarm condition first clears. If the alarm condition
is satisfied again, the alarm will work.
3.3.3 Setpoints switch
If an I2 module is installed in MIO slot, a switch can be connected to terminal number 14 and 16 to switch between
two different setpoints SP1 and SP2.
3.3.4 Communication function
S or S4 module can be installed at COMM slot to communicate with a computer. The instrument can be controlled
by computer. A RS232C/RS485 or USB/RS485 converter can enable a computer connect to AI instruments through
RS232 or USB communication port. Every communication port of a computer can connect up to 60 AI instruments,
or 80 AI instruments if a repeater is installed. A computer with 2 communication ports can connect to up to 160
instruments. Please note that every instrument connecting to the same communication line should be set to a unique
communication address. When number of the instruments is big enough, 2 or more computers can be used and built
into a local network.
AIDCS application software, a distributed control system software developed by Yudian, can control and manage 1
～
160 AI instruments, record the data, generate and print reports. If users want to develop their own distributed control
system by themselves, the communication protocol of AI instruments can be free offered. There are already many
famous distributed control system software support AI instruments.