Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 159)

Error Reporting
Chapter 7
7Ć4
03 The KA or KG does not have enough internal memory to store the start bit index. This
should only occur if the communication rung is very large. To correct this, the
communication zone can be shortened, perhaps by combining commands or windows.
It may also occur if a RAM hardware error corrupts the internal memory organization.
04 The first element of a memory access branch is not a GET. This condition can only be
detected if no command rungs have yet been detected and if the branch being
processed started with a BST. (BST = Branch Start; BND = Branch End)
05 The address field of the first GET in a memory access branch contains an invalid Data
Highway station address. The address must be less than 377.
06 The second element of a memory access branch is not a GET.
07 The third element of a memory access branch is not a GET.
08 Invalid window address in memory access branch; the address in the second GET is
greater than the third GET.
09 There is something besides a BST or BND after the third GET of a memory access
branch.
10 There is something other than a BST or output instruction after a BND in a memory
access rung.
11 A rung in the communication zone starts with something besides a BST or an XIC, or the
zone contains no command rungs and the terminating rung has been omitted.
12 The start bit address specified for a command rung is in the low byte of a word. Start
bits must always be in the 10 to 17 range.
13 The second element of a command rung is not an XIC.
14 The command code (the low digit of the address) of the second XIC in a command rung
is invalid.
15 The station address in the second XIC of a command rung is invalid. Station address
must be less than 377.
16 An instruction or an opcode other than XIC, XIO, BST, or BND has been encountered in
a bit control command rung, or the output element of the rung is incorrect.
17 The third element of a read or write command rung is not a GET.
18 The fourth element of a read or write command rung is not a GET.
19 The fifth element of a read or write command rung is not a GET.
20 The sixth element of a read or write command rung is not a legal output instruction.
21 The start of a command rung is not an XIC, or the terminating rung has been omitted.
This error is only generated if valid command rungs precede it.
22 The word containing start/done/error bits is positioned so that it crosses a boundary in
the data table. (For example, Start Bit 07710 means that the error bits would be in
Word 100, or 17710 means that the error bits would be located in the first word of the
program).
23 An unprotected write or bit control command is specified, and the DIP switch that
enables sending of unprotected commands is off.
24 Not used in 1771ĆKA.
25 Not used in 1771ĆKA.
26 Too many command rungs. A maximum of 255 command rungs can be programmed.
27 The default timeout is too large. Valid timeouts are from 011 to 407 octal. The value 010
causes the timeout to be disabled.