Cewe Prometer 100, Руководство пользователя

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Page 54 of 72 Prometer 100 User Manual BGX501-943-R01
Communication through the 1107 infrared optical communications port is performed through PC with suitable
communication cable. Care has to be taken to align the opto head so the IR transmitters and receivers are in
the best position to exchange signals. Usually this means attaching the opto head with the connecting wire
hanging straight down. Ambient visible light (daylight, incandescent or in particular fluorescent light) may disturb
the exchange of IR signals if strong enough and cause the communication to fail. To ensure reliable
communications, avoid strong ambient light positions when installing the Prometer 100.
RS232 Serial Communication Port
The RS232 communication port is used for connecting to communication equipment such as computers and
modems through a serial cable. The meter side connector is an RJ-45 type. The user should ensure that the
other side is fitted with a suitable connector before connecting an external device with the meter. See Figure 26
for pin description.
RS485 Serial Communication Port
The RS485 serial half duplex communication ports are intended to be used to connect the Prometer 100 to a
network for multi-drop communications. The RS485 network is looped through the input connector to the output
connector. See Figure 4 for pin description. If for example three meters needed to be “ daisy chained ”, then
simply connect the “RS485 Out” on the first meter to the “RS485 In” on the next meter and so on. The pin
connection for both ports is identical, so the same type of cable can be used through-out and is not polarity
conscious.
Ethernet Port
The Ethernet serial communication port is used for connecting directly to an internal Ethernet network. Each
meter needs to be provided with an IP addressed static to internal LAN for communicating the data over TCP/IP
network. See Figure 26 for pin description.
Figure 26: Pin Description for RJ-45 Ports
Note- Recommended cable to use with all the above mentioned ports (RJ-45) is CAT6 type and shall be
crimped with standard tools used in LAN connection to PC/ Laptop. The other end of the cable should be as
desired by customer for its intended application like connecting to Modem or PC or LAN switch etc. In general,
all the communication ports in meter are optically isolated with each other and can be configured by M-Cubed
for data settings, TCP/IP settings etc. as desired by user. The Ethernet cable is normally connected between
the meter and the main switch, although local IP installations may differ.