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User Manual
Modbus TCP Master / MQTT
Document code: MN67935_ENG Revision 1.001 Page 11 of 37
ETHERNET:
The Ethernet port is used for programming the device, for MQTT communication and for Modbus TCP communication.
The Ethernet connection must be made using Connector2 of HD67935-B2 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 is recommended the use of a cross cable.
GPRS:
The HD67935-GPRS-B2 uses a Quad-band GSM/GPRS module.
The Antenna connector is a SMA Female (‘Female Outer Shell’ and ‘Female Receptacle’) so
the Antenna must have a SMA Male connector.
The SIM type is Micro-Sim.