Industrial
Electronic Devices
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User Manual
BACnet Slave / Modbus Slave
Document code: MN67672_ENG Revision 1.100 Pagina 15 di 32
RS232:
The connection from RS232 socket to a serial port (example one from a personal computer) must be made with a NULL MODEM cable (a
serial cable where the pins 2 and 3 are crossed).
It is recommended that the RS232 cable not exceed 15 meters.
ETHERNET:
The BACnet/IP communication and the updating must be made using Connector3 and/or Connector4 and/or Connector5 of HD67672 with at
least a Category 5E cable. The maximum length of the cable should not exceed 100m. The cable has to conform to the T568 norms relative
to connections in cat.5 up to 100 Mbps. To connect the device to an Hub/Switch is recommended the use of a straight cable, to connect the
device to a PC/PLC/other is recommended the use of a cross cable.
