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| สถานที่กำเนิด | ประเทศสหรัฐอเมริกา |
| ชื่อแบรนด์ | GE |
| ได้รับการรับรอง | CO.CQ |
| หมายเลขรุ่น | 531X189LTBALG1 |
Product Specification
| Brand/Manufacturer | GE/USA |
| Part Number | 531X189LTBALG1 |
| Alternate Part Number | 531X189LTBALG1 |
| Description | Process Interface Board |
| Dimennsions | 3*14*12cm |
| Weight | 0.23kg |
Product Details
The Modbus/RTU protocol uses a Master/Slave protocol that can support
a common bus of one master and up to 247 Modbus Slaves. That common
bus can be extended from direct wiring to radio and telephone modems.
As a RTU master, commands are constructed and issued to an addressed
slave.Only the addressed slave is expected to respond to the command.
Message integrity is assured through use of checksums included in a message.
Should a slave receive a message with a bad checksum, no response is
returned. This master provides a configurable modem turn around time-out
parameter and retries sending the message twice.
Before the RTM can send acceptable RTU commands, it must be configured
to the frame protocol usedby the slave RTU’s (or interfacing modems)
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