I/O Module User's Manual
Serial Communication Module 
5-
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 ADAM 5000 IO modules User’s Manual
Overview 
Compatible ADAM-5000 Series Main Units 
The ADAM-5090 is a 4-port RS-232 communication module to be 
implemented with the following Advantech ADAM-5000 series main units: 
ADAM-5510 (with library Version V1.10 or above) 
ADAM-5511 (with library Version V1.10 or above) 
5.1  ADAM-5090 4-port RS-232 Communication Module 
Bi-direction Communication 
The ADAM-5090 is equipped with four RS-232 ports, 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 RS-232 interface. Furthermore, the ADAM-
5090 can issue commands to control other devices. It is fully integrated with the 
ADAM-5000, ADAM-5500 and ADAM-4000 series, and transmits data to 
each other through the RS-232 port. The whole integrated system is an 
intelligent stand-alone system and can connect and issue commands to 
control devices such as printers and PLCs in remote factory location. 
The ADAM-5090 transmits and receives data by polling communication, 
and each port can receive up to 128 bytes in the FIFO. For continuous data 
longer than 128 bytes, please refer to Table 20 for Baud Rate setting to 
avoid data loss. 
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  
Table 5-1: Baud Rate setting reference table 










