525
Memory Areas Appendix C
4. Data in DM 6144 to DM 6655 cannot be overwritten from the program.
IR Area
Flags/Bits for an Inner Board in Slot 1 (IR 200 to IR 215)
Serial Communications Board Flags/Bits
Word Bits Function Communications
modes
IR 200 00 Serial Communications Board Hardware Error Flag All modes
01 Port Identification Error Flag (hardware error)
02 Protocol Data Error Flag Protocol macro
03 to 10 Not used.
11 Port 2 Protocol Macro Execution Error Flag
12 Port 1 Protocol Macro Execution Error Flag
13 Port 2 PC Setup Error Flag All modes
14 Port 1 PC Setup Error Flag
15 PC Setup Error Flag
IR 201 00 to 03 Port 1 Error Code
0: Normal operation 1: Parity error 2: Framing error
3: Overrun error 4: FCS error 5: Timeout error
6: Checksum error 7: Command error
All modes
04 Communications Error Flag
05 Transmission Enabled Flag Host Link or
No-protocol
06 Reception Completed Flag
07 Reception Overflow Flag
Sequence Abort Completion Flag Protocol macro
08 to 11 Port 2 Error Code
0: Normal operation 1: Parity error 2: Framing error
3: Overrun error 4: FCS error 5: Timeout error
6: Checksum error 7: Command error
All modes
12 Communications Error Flag
13 Transmission Enabled Flag Host Link or
No-protocol
14 Reception Completed Flag
15 Reception Overflow Flag
Sequence Abort Completion Flag Protocol macro
IR 202 00 to 07 Port 1 Communicating with PT Flags (Bits 00 to 07 = PTs 0 to 7) NT Link in 1:N mode
Repeat Counter PV (00 to FF hexadecimal) Protocol macro
00 to 15 Reception Counter (4-digit BCD) No-protocol
IR 203 00 to 07 Port 2 Communicating with PT Flags (Bits 00 to 07 = PTs 0 to 7) NT Link in 1:N mode
Repeat Counter PV (00 to FF hexadecimal) Protocol macro
00 to 15 Reception Counter (4-digit BCD) No-protocol
IR 204 00 Port 1 Tracing Flag Protocol macro
01 Port 2
02 to 05 Not used.
06 Port 1 Echoback Disabled Flag (Only used for modem control in protocol
macro mode. See note.)
07 Port 2
IR 204 08 to 11 Port 1 Protocol Macro Error Code
0: Normal operation 1: No protocol macro function
2: Sequence number error 3: Reception data/write area overflow
4: Protocol data grammar error
5: Protocol macro executed during port initialization
Protocol macro
12 to 15 Port 2
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