Tiny Addressable Serial Converter
ICP DAS CO., LTD.
User Manual, Ver. 1.3, Apr. 2018, Page: 6
1.1
Addressable RS-232 Converter
Most RS-232 devices don’t support individual device addressing. To overcome this limitation,
ICPDAS tM-752N series modules assign a unique address to any RS-232 device installed on
an RS-485 network. When the Host PC sends a command to the RS-485 network a device
address can be attached to the command. The destination tM-752N module will then
remove the address field and pass the remaining commands to the destination RS-232
device. Responses from the local RS-232 devices will be returned to the Host PC via the tM-
752N module.
1.2
Self-Tuner ASIC Inside
The built-in Self-Tuner ASIC on an RS-485 port can automatically detect and control the
send/receive direction of the RS-485 network. Consequently, there is no need for application
programs to be concerned with direction control of the RS-485 network.
1.3
Onboard 1KB Queue Buffer
tM-752N series modules are equipped with a 1KB queue buffer for its local serial port. All
input data can be stored in the queue buffer until the Host PC has time to read it. These
features allow the Host PC to be linked to thousands of RS-232 devices without any loss of
data.
