Toshiba SX 2000 - Manual (Page 53)

Operation:
Chapt.1 System Configuration
When the input condition of the XFER instruction comes ON, the read operation
is started. The execution status is monitored by B+1 as follows.
B+1 (Execution status): HOOOO ^ Normal complete
H0001 ^ Communication error (parity error, framing error)
H0002 ^ Message length over (more than 512 bytes)
H0003 ^ Receive buffer over flow
H0004 _ Receive time-out (see below)
The receive time-out is detected when the time from the starting character to the
trailing code exceeds the following time.
Long scan cyele or short receive message, low baudrate avoid the receive time-out.
Baudrate Time-out setting
300, 600, 1200 bps 30 seconds
2400 bps 15 seconds
4800 bps 7 seconds
9600 bps 3 seconds
19200 bps 1.5 seconds
Sample program:
00048 MOU D10001C 00000 MOU D1001T-
-C 00004 MOU D1002TC 01100 MOU D1003T-
- I-C 00Z56 MOU D10041C 00000 MOU D10051C 00000 MOU D1006]--------------------------------------
R0100 R0101 R0102
Tf--- T1—rC RST S00511CD1000 XFER D1004 ^ D1002]-------------------------
SO051
—
Li—
T-CD1005 = 000001CD1006 <> 00000TC SET R0101>
H51005 <> 00000T-
S0051
-[SET R0102T-
R010O
—Ml------ [ RST R0101TC RST R01021-
Rung 1: Sets the parameters for the XFER instruction.
The registers of 256 words starting with Dll00 are reserved to store
the received message.
Rung 2: When R0100 is set to ON, the read operation is started.
If the operation is completed normally, the received message is
stored in D1100 and after, and R0101 is set to ON.
If the message could not be received normally by some error, R0102
is set to ON.
Rung 3: When R0100 is reset to OFF, the result status (R0101 and R0102)
are reset to OFF.
36 Sequence Controller S2T