Rs232C Serial Interface - SATO M5900RV Operation Manual

Operation Manual
0
DTR High or
X-On
The receiving buffer will not be able to receive more data again until
a "Buffer Available" condition occurs. This takes place when the
receiving buffer has emptied so that only 56K bytes of data are
being held (8K bytes from being full). At this time, DTR will go
"high" or an X-On is sent to tell the host that it can again receive
data. See Figure 3-2.
0
DTR Low or
X-Off

4.4 RS232C Serial Interface

General Specifications
Asynchronous ASCII
Data Transmission Rate 2400, 4800, 9600 and 19200 bps
Character Format
M5900RV
Buffer Near Full
Buffer Available
Half-duplex communication.
Ready/Busy Hardware Flow Control
Pin 20, DTR Control
Pin 4, RTS Error Condition
X-On/X-Off Software Flow Control
Bi-Directional communication (ENQ/Response)
1 Start Bit (fixed)
7 or 8 data bits (selectable)
Odd, Even or No Parity (selectable)
1 or 2 Stop bits (selectable)
4. Interface Specifications
62K 64K
DTR Low or
X-Off
56K 64K
DTR High or
X-On
Fig. 3-1
Fig. 3-2
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