Modbus Slave - Rs485

Industrial Electronic Devices
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User Manual
Modbus Slave
/
Modbus
TCP
Master
-
Converter
Document code: MN674-A003_ENG Revision 1.000 Page 10 of 30
RS485:
The connection of the RS485 in the HD674-A003-E4x-xx device must be made with a 3way
MiniFit Female connector. The pinout of Male MiniFit connector of the board is at right side of
the page.
The connection of the RS485 in the HD67-A003-E7x-xx device must be made with a AMP
SuperSeal 1.5 Male connector. The pinout of Female connector of the board is at right side of
the page.
The termination of RS485 line, with a 120Ω resistor, in the HD674-A003-Exx-xx is made
internally of the device; when the order is performed. If the device have the RS485 terminated
the code is the follow: HD674-A003-Exx-Yx; otherwise is this other: HD674-A003-Exx-Nx.
The maximum length of the cable should be 1200m (4000 feet).
Here some codes of cables:
Belden: p/n 8132 - 2x 28AWG stranded twisted pairs conductor + foil shield + braid
shield;
Belden p/n 82842 - 2x 24AWG stranded twisted pairs conductor + foil shield + braid
shield;
Tasker: p/n C521 - 1x 24AWG twisted pair conductor + foil shield + braid shield;
Tasker: p/n C522 - 2x 24AWG twisted pairs conductor + foil shield + braid shield.
Link for Mini-Fit® connectors: http://www.molex.com/molex/products/group?key=minifit_products&channel=products
Link for SuperSeal 1.5 connectors: http://www.te.com/catalog/cinf/en/c/10876/956