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1.
Introduction
Introduction
There are many RS-232 devices used in industry applications.
Nowadays, linking all these RS-232 devices together for both
automation & information important. Usually, these devices are far
away from the host-PC. In modern situation, multi-serial card linking
is inefficient. Our 752x series products can link multiple RS-232
devices via a single RS-485 network. This network protocol offers
stability, reliability and simple cabling while delivering a low –cost,
easy-to-maintain product..
Addressable RS-232 Converter
Most RS-232 devices don’t support device addresses. Our I-752X
series can assign a unique address to any RS-232 device installed in a
RS-485 network. Once the host-PC sends a command with a device
address to the RS-485 network, the destination-752x will remove the
address field & pass the other commands to its local RS-232 device.
The response of this local RS-232 device will be returned to the hostPC via the I-752x.
Master-type Addressable RS-232 Converter
ICPDAS’ 752x products are unique. Our 752X products are Mastertype converters, while other converters are Slave-type. Slave-type
converters are helpless without a host-PC. In real industrial
applications, customers are not satisfied with Slave-type converters
because they can not adapt to individual demands. The powerful 752x
series analyzes local RS-232 devices, D/I or D/O without a host-PC.
Refer to Application 5~9 for more information.
Onboard 1K byte Queue-buffer
The I-752X equips a 1K byte queue-buffer for its local RS-232
device. All input data can be stored in the queue-buffer until the hostPC has time to read it. These features allow the host-PC to link
thousands of RS-232 devices without losing any data.
7521/7522/7522A/7523/7524/7527 Software User’s Manual (Rev. 2.1, Jul/2005, 7PS-000-21) ----- 3