73 ADAM-5000 Series User Manual
Chapter 7 Serial Modules
7.1.2 ADAM-5091 4-port RS232/422/485 Communication Module
with share interrupt (For ADAM-5560 series and ADAM-5630
series)
Bi-direction Communication
The ADAM-5091 is equipped with four RS232/422/485 ports with share interrupt,
which makes it especially suitable for bi-direction communication. It can simultaneously
read data from other third-party devices such as Bar Code and PLC as long as these
devices are equipped with a RS232/422/485 interface. Furthermore, the ADAM-5091 can
issue commands to control other devices. It is fully integrated with the ADAM-5560, and
transmits data to each other through the RS232/422/485 port. The whole inte-
grated system is an intelligent stand-alone system and can connect and issue com-
mands to control devices such as printers and PLCs in remote factory location.
The ADAM-5091 transmits and receives data by sharing interrupt communication, and
each port can receive up to 128 bytes in the FIFO. For continuous data longer than
128 bytes, please refer to Table 27 for Baud Rate setting to avoid data loss.
Communication Backup Function
With the ADAM-5091 you can implement dual communication channels between your
PC and the ADAM system. Even when one of the two communication channels is
down, your system can still function through the alternative communication channel.
This dual communication channels can be implemented by application software.
Table 7.4: Baud Rate Settings
Baud Rate (bps) 115200 57600 38400 19200 9600 4800 2400
Polling interval (ms) 11.11 22.22 33.33 66.66 133.33 266.66 533.33
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