Motorola 68P02958C00-B - Manual (Page 453)

Error Messages
C-161
Error #982: MODBUSTS module, Function %%
The N_ELM field in poll control is zero !
It must be GE from 1.
May indicate system software problem. Consult product group.
Error #983: MODBUSTS module, Function %%
Could not translate the RTU PLC to MODBUS because the MODBUS buffer is
too short
The master should not send frames or poll for frames longer than 140 bytes.
Error #984: MODBUSTS module, Function %%
Could not translate the RTU PLC to MODBUS !
No support for the data type appearing in a poll control !
May indicate system software problem. Consult product group.
Error #985: MODBUSTS module, Function %%
The length of pure data in send control is 0 !!
It must be GE from 1
May indicate system software problem. Consult product group.
Error #986: MODBUSTS module, Function %%
The N_ELM field in send control is EQ 0 !
It must be GE from 1
May indicate system software problem. Consult product group.
Error #987: MODBUSTS module, Function %%
The length of pure data in send control is greater from 0xff !
It must be LE from 0xff !
May indicate system software problem. Consult product group.
Error #988: MODBUSTS module, Function %%
The length of pure data does not fit to the data type and to the N_ELM field in
RTU PLC format frame !
May indicate system software problem. Consult product group.
Error #989: MODBUSTS module, Function %%
No support for the data type in the send control frame !
May indicate system software problem. Consult product group.
Error #990: MODBUSTS module, Function %%
The expected length of pure data reply is GT 0xff bytes. Modbus protocol does
not allow read of DATA the length of which is GT 0xff bytes
The master should not send frames or poll for frames longer than 140 bytes.