This document introduces the default values, communication speed, controller station number, control area/status area, controller connection instructions, and controller Read/Write address definition of Emerson EC20 series PLC.
This manual describes the communication options for the Emerson EC20 Series PLC, including RS‑232 and RS‑485 ports with various connector types. It lists the pin assignments for each interface and notes the supported baud rate of 19200, 8 data bits, even parity, and 1 stop bit.
The document also defines the PLC's register map, external I/O address ranges (X0‑X377 inputs, Y0‑Y377 outputs), internal relays (M0‑M1999), and special internal relays (SM0‑SM255). Notes explain Modbus support via COM0 and COM1 and restrictions on writing certain system registers. This manual is written in Japanese.
| Default Baud Rate | 19200, 8 data bits, Even parity, 1 stop bit |
|---|---|
| External Output Relays | Y0‑Y377 (378 points) |
| External Input Relays | X0‑X377 (378 points) |
| Internal Relays | M0‑M1999 |
| Special Internal Relays | SM0‑SM255 |
The default setting is 19200 baud, 8 data bits, even parity, and 1 stop bit.