GMW IPP 144 - 40 G, User Manual

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INTERFACE
PRINT
INTERVAL
•
SERIAL
•
USB - Serial IF2 (version E only)
This sets the printer for data transmission via serial
interface or USB-interface.
The printing of measuring values can be carried out under
internal timer control.
Setting range: 10 s ... 24 h in steps of 10 s.
The interval starts, when the last received line was printed.
r For more information see chapter 7.3. „Handshake
Messages“ !
BAUDRATE
DATA FORMAT
6.2. Serial interface settings
There are ten baud rates available:
110; 150; 300; 600; 1200; 2400; 4800; 9600;
19200 and 38400 Baud.
There are two formats available:
7-bit or 8-bit - transmission,
1 start bit / ... / parity / 1 stop bit.
Attention:
With 7 bit no parity, the sender must be set to 2 stop
bits!
PARITY There are five options available:
Even; Odd; Mark; Space; No parity.
There is no check made.
MODE
There are 2 operating modes:
•
ONLINE: The device is ready to receive.
•
OFFLINE: The device is not ready to receive.
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Improved handshaking for pre-stored texts
After receiving the control command <CR> the printer now
sets RTS at „BUSY“ or the signal XOFF is transmitted.
When the printing of pre-stored text is complete, RTS is
reset or the signal XON is transmitted.
This handshake can be used to control the data
transmission and prevent rapid text calls being lost or
overwritten.
Note:
Without Handshake the following can occur, if the text
calls are sent in too quickly:
Data input:
<Ctrl C> 1 <CR> <Ctrl C> 2 <CR> <Ctrl C> 3 <CR>
Actual Print-out:
Machine No. 3 pre-stored Text No. 1
2 just „2“ printed, Text No. 2 missing
3 just „3“ printed, Text No. 3 missing
XON / XOFF
The report functions „Printer read/not ready“ are handled
by this protocol if no handshake lines are connected
(RS 232 C, RS 422 or RS 485).
This function only applies to the E version, Interface II.
XON is transmitted if the IPP 144-40 GE is ready to
receive.
XOFF is transmitted if the IPP 144-40 GE is not ready
to receive (see above).
Note:
If the IPP 144-40 GE is not ready to receive, it transmits
this character just once, not continuously.
No adjustments have to be made, this protocol always
runs parallel to the hardware handshake.
During the preset wait delay the interface is not ready to
receive. After expiry of the wait delay the RTS signal
(or XON) becomes active again and requests the subse-
quent transmission.
The next interval begins upon receiving of <CR> or
<CR + LF>. <LF> on its own is not accepted.
Print
interval
(serial)