I-12
FX Series PLC User's Manual - Data Communication Edition
Remote Maintenance
2 Specifications
2.1 Communication Specifications (Reference)
2. Specifications
This chapter explains the communication specifications and performance.
2.1 Communication Specifications (Reference)
Communication is executed according to the (fixed) specifications shown in the table below. Specification
items such as baud rate cannot be changed.
Only modems supporting the communication specifications below can be used.
Item Modem mode Remarks
Transmission standard RS-232C standard
Maximum total extension distance 15 m (49' 2") or less
Protocol type Modem mode
Communication method Half-duplex, asynchronous system
Baud rate
9600
bps
Modem ↔ PLC
Modem ↔ Personal
computer
Character format
Start bit 1-bit
Data bit 7-bit 8-bit
When PP modem mode
(ch1) or PP modem
mode (ch2) is set, "Data
bit: 8-bit" and "Parity bit:
Not provided" are set
automatically.
Parity bit Even Not provided
Stop bit 1-bit
Header
Fixed
Terminator
Control line Not provided
Sum check Fixed
Applicable FX Series
FX3UC Series
FX3U Series
FX3G Series
FX2NC Series
—
FX2N Series
—
FX1NC Series
—
FX1N Series
—
FX1S Series
—
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