Rockwell Automation 1395 Multi-Comm Hardware/Software - Manual (Page 42)

Chapter 3
Configuration & Interfacing
3–31
PLC Typed Read (N11:499–999) – This request reads the status of the
previous parameter writes (N10:500–999). If a Typed Read is specified
with an PLC address of N11:499, the write status of all parameters from
the last TYPED WRITE request (N10: xxx–xxx) will be OR’ed together. If
one error has occurred during the last write operation, this address will
contain the parameter number where the error occurred. If multiple errors
occurred the value will be 0FFFF (hex), and the PLC Controller can
request a Typed Read of N11:500–999 to determine which parameters
have had errors.
PLC Typed Read (N12:0–999) – This request translates into a read
parameter full message in the Drive. Each parameter specified will result
in the of return 24 bytes of data.
PLC Typed Read (N14:0–6) – The message returns the values contained
in the MCA boards seven fast parameters for the channel (A or B) making
the request. For example, if channel B is setup for DH+ and this request is
made, the MCA board will return the values of parameter numbers
357–363.
PLC Typed Write (N14:4–6) – This message can write values to the
MCA boards 3 remaining fast parameters for the channel (A or B). Each
channel configured for DH+ reserves 4 fast parameters for the token pass
with data option. For example, if channel B is setup for DH+ and this
request is made the PLC Controller can write values to parameters
311–313.
PLC Typed Read (N15:0–39) – This message emulates the RIO block
transfer functions available on the MCA board with the exception of the
multiple parameter read. Refer to the message structure section of this
chapter for details on the available messages and their use.
NOTE:With this command there are no BT flags to synchronize the
Write/Read operation as on the RIO.
PLC Typed Write (N15:0–39) – This message emulates the RIO block
transfer functions available on the MCA board with the exception of the
multiple parameter write. Refer to the message structure section of this
chapter for details on the available messages and their use.
NOTE:With this command there are no BT flags to synchronize the
Write/Read operation as on the RIO.