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5-1SectionUsing Protocol Macros
59
Protocol Macro Function Specifications
Item Description
Number of protocols (20 max.)
Can be created and registered with the Protocol Support Tool
Number of sequences (1,000 max.)
(CX-Protocol).
Per protocol
Number of
sequences
60 max.
Number of
messages
300 max.
Number of
reception
matrixes
100 max.
Protocol data memory Flash memory in the Serial Communications Board (Retained even
when the power supply to the PC is turned OFF.)
Sequence execution condition Using the CPU Unit’s PMCR(––) instruction (specifying the sequence
number)
Communications mode Half-duplex
Synchronous mode Start-stop synchronization (asynchronous mode)
Baud rate (see note) RS-232C port and RS-422A/485 ports:
1,200/2,400/4,800/9,600/19,200 bps
Default setting: 9,600 bps
Communications distance (see note) RS-232C port: 15 m max.
RS-442A/485 port: 500 m max. (The total combined cable length is
500 m max. T-branch lines must be a maximum of 10 m long.)
Connection configuration RS-232C port: 1:1 (1:N (N = 32 Units max.) is possible using a
Converting Link Adapter.)
RS-422A/485 port: 1:N (N = 32 Units max.)
Number of connected Units 32 Units max. (unit numbers 0 to 31; unit number 0 is set for 1:1
connection)
Maximum number of
data exchange words
Operand setting 127 words Including the word that specifies the number of
words (1 word)
between PC and
Link word setting 128 words O1, O2, I1, and I2: 128 words total
protocol macro
function
Direct setting 128 words Maximum number of words per data attribute