Current type analog quantity redundancy wiring terminal board

The utility model relates to a current type analog quantity redundancy wiring terminal board, which comprises an input interface with n pins and an output interface with n pairs of pins, and each pair of pins of the output interface comprises two pins; any two pins of the input interface are connected with any two pairs of pins of the output interface in parallel, the rest m pins of the input interface are respectively connected with the rest m pairs of pins of the output interface in series one by one, m is equal to n-2, and m and n are positive integers; the input interface is used for connecting an analog quantity output end of field equipment; and the output interface is used for connecting the input end of the analog quantity input module with the redundancy function of the PLC system. And one path of input is expanded into two paths of output, so that names of input and output interfaces of field equipment, PLC equipment and a terminal board can be in one-to-one correspondence, and safe wiring and wirin