155
IR Area
Section 3-2
3-2-4
Flags/Bits for an Inner Board in Slot 1 (IR 200 to IR 215)
Note
When using an Inner Board or Communications Unit, do not write to the read
bits/words (R) specified in the
Read/Write
column of the following tables. Writ-
ing to these bits/words may produce unexpected results.
Serial Communications Board Flags/Bits
Word
Bits
Function
Read/
Write
Communications
modes
IR 200 00
Serial Communications Board Hardware Error Flag
R
All modes
01
Port Identification Error Flag
(hardware error)
R
02
Protocol Data Error Flag
R
Protocol macro
03 to 10
Not used.
R
11
Port 2 Protocol Macro Execution Error Flag
R
12
Port 1 Protocol Macro Execution Error Flag
R
13
Port 2 PC Setup Error Flag
R
All modes
14
Port 1 PC Setup Error Flag
R
15
PC Setup Error Flag
R
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
R
All modes
04
Communications Error Flag
R
05
Transmission Enabled Flag
R
Host Link or
No-protocol
06
Reception Completed Flag
R
07
Reception Overflow Flag
R
Sequence Abort Completion Flag
R
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
R
All modes
12
Communications Error Flag
R
13
Transmission Enabled Flag
R
Host Link or
No-protocol
14
Reception Completed Flag
R
15
Reception Overflow Flag
R
Sequence Abort Completion Flag
R
Protocol macro
IR 202 00 to 07
Port 1
Communicating with PT Flags
(Bits 00 to 07 = PTs 0 to 7)
R
NT Link in 1:N
mode
Repeat Counter PV
(00 to FF hexadecimal)
R
Protocol macro
00 to 15
Reception Counter
(4-digit BCD)
R
No-protocol
IR 203 00 to 07
Port 2
Communicating with PT Flags
(Bits 00 to 07 = PTs 0 to 7)
R
NT Link in 1:N
mode
Repeat Counter PV
(00 to FF hexadecimal)
R
Protocol macro
00 to 15
Reception Counter
(4-digit BCD)
R
No-protocol
IR 204 00
Port 1
Tracing Flag
R
Protocol macro
01
Port 2
R
02 to 05
Not used.
R
06
Port 1
Echoback Disabled Flag
(Only used for modem control in pro-
tocol macro mode. See note.)
R
07
Port 2
R
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
R
Protocol macro
12 to 15
Port 2
R