CS1 CS1 Unit Descriptions ASCII Units C200H-ASC@@ ASCII Units C200H-ASC@@ Easily Perform ASCII Data Communications * Perform ASCII communications with a wide range of external devices. * The C200H-ASC11/ASC21/ASC31 function as special processing units with BASIC programming. * Large-capacity user memory: 200 Kbytes * Model available with RS422A/485 port. * Various forms of data exchanges with CPU Unit: Select the best method for the read/write trigger and timing. * High-speed data exchanges possible with shared memory (not dependant on I/O refresh). * A wide range of interrupt processes: Interrupts fro CPU to ASCII Unit, communications interrupt, key interrupts, timer interrupts, error interrupts, etc. * Easy control of transmission control signals. * Calculation instructions for error check codes. * Many BASIC debugging functions (break points, 1-step execution, execution stop monitoring, etc.) * Error log supported with up to 30 error records. C200H-ASC11 C200H-ASC21 C200H-ASC31 Function The ASCII Units support BASIC language programming and RS232C and RS422A/485 serial communications. BASIC programming enables ASCII communications with essential any external device. It can also be used as a special processing unit to aid the CPU Unit without using external communications. The C200H-ASC21/ASC21/ASC31 provided shared memory with the CPU Unit, and both the ASCII Unit and the CPU Unit can access the shared memory asynchronously, providing for high-speed data exchanges between the two Units without using interrupts. System Configuration Terminal (e.g., Windows Hyperterminal) BASIC program RS-232C RS-232C General-purpose external device CS1-105 CS1 CS1 Unit Descriptions ASCII Units C200H-ASC@@ Specifications Classification C200H Special I/O Unit User memory 200 Kbytes Shared memory Provided (90 words in I/O memory) Note: The C200H-ASC02 can also be used with CS1 PLCs. CS1-106 Serial communications ports RS-232C x 2 Unit numbers 0 to F Model C200H-ASC11 RS-232C x 1, RS422A/485 x 1 C200H-ASC21 RS-232C x 2, RS232C x 1 for terminal C200H-ASC31