The Charge machine can adopt RS232 and RS485, TCP/IP (Matching Function) a variety of communication protocol and computer communications, with RS232 and RS485 way automatic ؛deification function, need not manual jump line; Adopt RS485 into line many sets of networking, standard link can reach 128. and computer communications standard distances of up to 1200 meters. Using TCP/IP for networking, connect the Numbers and communication distance is limitless.