1. Product Overview
1.1 Product Functions
This product is a Modbus RTU/ASCII to Modbus TCP protocol converter developed
by Sichuan ODOT Automation System Co., Ltd based on market demand and years of
experience.
All slave devices that have RS485/RS422 interfaces and support Modbus RTU/ASCII
can connect to the Modbus TCP network through this gateway and communicate with TCP
clients. So as to realize the connection of low-speed serial devices to the high-speed
Ethernet to realize high-speed data transmission. The gateway has two different working
modes, "transparent" and "mapping", which can achieve maximum system compatibility.
1.2 Functional Characteristics
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9-36V wide voltage input, anti-reverse connection protection. DC-DC isolated
power supply, 3000V isolation voltage.
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2KV network port isolation protection, 10M/100Mbps rate adaptive, automatic
MDI/MDIX flip.
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Small size, only 30mm thickness, saving installation space.
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Support address mapping mode to realize fast response to TCP client request.
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Support up to 5 TCP client access.
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The mapping mode supports function codes:
0x01,0x02,0x03,0x04,0x05,0x06,0x0F,0x10.
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The transparent transmission mode supports all public function codes and custom
function codes.
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6KB large data buffer area, larger data transfer volume.
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RS485 dual serial port refreshes in real time, with short scanning period and strong
load capacity.
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The master and slave modes of RTU and ASCII are optional, which is highly
adaptable.
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The watchdog can be enabled and the watchdog time can be set.