Specifications

70
Additional Functions Section 7-5
7.5 Additional Functions
In addition to the random write and read access to PLC variables, a memory area
comprising 12 bytes is specified in the application description as poll area. The
location of this memory area is specified in the application description.
Only marginal conditions regarding this memory area are that the PLC must be
able to access in bit-mode and the terminal in word-mode and the memory area
must be contiguous.
The addresses M, D or DP can be accessed in word-mode.
The data area comprises a maximum of 6 words or 12 bytes.
Example: The cyclic data area is set to DW21 in the programming system.
Word address DW High-byte Low-byte
Word address +0 DW21 Write coordination byte Reserved
Word address +1 DW22 Message channel high-byte Message channel
low-byte
Word address +2 DW23 Function key LED 1 to 4 LED 5 to 8
Word address +3 DW24 Function key LED 9 to 12 LED 13 to 16
Word address +4 DW25 Function key LED 17 to 20 LED 21 to 24
Word address +5 DW26 Function key LED 25 to 28 LED 29 to 32
7.6 Error Messages
Code 1 E SLAVE NOT READY ..........Slave not ready
2E
PROTOKOL ....................Sequence of the packets
3E
FRAME .........................Character frame error
4E
TIMEOUT.......................Timeout error
5E
CRC BCC......................CRC error
6E
PARITY.........................Parity error
7E
SEND ABORT .................Abort send process
8E
REC ABORT ...................Abort receive process
9E
BUF SIZE......................Insufficient cyclic buffer
10 E
NO DEFINE....................No cyclic data defined
12 E
DEFINE ........................Cyclic data already defined
15 E
NO PROTOCOL ...............Selected protocol is not sup-
ported
16 E
OVERRUN......................Receive buffer overrun
40 E
SYS ADDRESS ................Undefined system variable