2.5 Transmission Specifications
2-12
" Transmission Control Resending Sequence
Two constants below are related to the transmission control resending sequence. Both are
transmission parameters like the transmission control monitoring timers, whose settings can
be changed for each system.
Retry 1 : Number of resendings of a sequence character at an invalid or no response
at all. Recommended value is 10 times.
Retry 2 : Number of resendings of a text at a block check error (reception of NAK).
Recommended value is 3 times.
Parameter Contents and Set Value
Initial
Value
RS030 Number of data bits 7 : 7 (bit)
8 : 8 (bit)
8
RS031 Number of stop bits 0 : 1 (bit)
1 : 1.5
2 : 2
0
RS032 Parity specification 0 : No specification
1 : Odd parity
2 : Even parity
2
RS033 Transmission speed specification 1 : 150 (baud rate)
2 : 300
3 : 600
4 : 1200
5 : 2400
6 : 4800
7 : 9600
8 : 19200
7
RS034 Timer A Sequence monitoring timer
Serves as protection against invalid or no response
Unit : 0.1 sec. (Setting range : 0 to 100)
30
RS035 Timer B Text reception monitoring timer
Serves as protection against no response of text end character
Unit : 0.1 sec. (Setting range : 0 to 255)
200
RS036 Retry 1 Number of resendings of a sequence character at an invalid or
no response (Setting range : 0 to 30)
10
RS037 Retry 2 Number of resendings of a text at a block check error (reception
of NAK). (Setting range : 0 to 10)
3
RS038 Block check method 0 : Check sum 0