YASKAWA CP 040 RS422/485 Manual page 65

VIPA System SLIO
OPTION3: Character frame
Data bits
Parity
Stop bits
Flow control
OPTION4, 5: ZNA
OPTION6, 7: TMO
HB300 | CP | 040-1CA00 | en | 18-28
Byte Bit 7 ... 0
0 n Bit 1, 0: Data bits
– 00b = 5 Data bits
– 01b = 6 Data bits
– 10b = 7 Data bits
– 11b = 8 Data bits
n Bit 3, 2: Parity
– 00b = none
– 01b = odd
– 10b = even
– 11b = even
Bit 5, 4: Stop bits
n
– 01b = 1
– 10b = 1.5
– 11b = 2
n Bit 7, 6: Flow control
– 00b = none
– 10b = hardware
– 11b = XON/XOFF
Default: 13h
n
– (Data bits: 8, Parity: none, Stop bit: 1, Flow control: none)
Number of bits onto which a character is mapped.
For the purposes of the parity check, the information bits are expanded by the parity bit.
The value of the parity bit ("0" or "1") completes the value of all the bits to obtain a pre-
arranged state. If the parity was not specified, the parity bit is set to "1" but it is not evalu-
ated.
The stop bits are appended to each character and signify the end of the character.
This is a mechanism that synchronizes the data transfer when the transmitting station
sends the data faster than it can be processed by the receiving station. Flow control can
be hardware- or software-based (XON/XOFF). Hardware flow control employs the RTS
and CTS lines and these must therefore be wired accordingly. Software flow control
employs the control characters XON=11h and XOFF=13h. Please remember that your
data must not contain these control characters.
The delay time that must expire before a command is executed. The ZNA is specified in
ms.
Option4: ZNA (High byte)
Option5: ZNA (Low byte)
Range of values: 0 ... 65535
n Default: 0
With TMO the maximum permissible time interval between 2 telegrams is defined. TMO is
specified in ms.
Option6: TMO (High-Byte)
Serial communication protocols
STX/ETX > Parameter data of STX/ETX
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