Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 46)

4–4 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
Command: Description:
PLC TYPED READ
(N30:0–493)
This request translates into a read parameter full
message in the 1336 FORCE. Each parameter
specified results in 20 words of data (actual value,
minimum value, maximum value, descriptor, and
parameter text). You can read a maximum of 50
parameters with this service if your PLC uses a file
size of 1000 words. If your PLC uses a different file
size, this service may take a different number of
parameters.
PLC 5 TYPED READ
(N40:0–63)
This message emulates the block transfer functions
with the exception of the multiple parameter read.
Refer to the emulated message structure section later
in this chapter, for details on the available messages
and their use.
PLC 5 TYPED WRITE
(N40:0–63)
This message emulates the block transfer functions.
Refer to the emulated message structure section in
later in this chapter for details on the available
messages and their use.
PLC 5 TYPED READ
(N50:0–499) for Trend 1
(N51:0–499) for Trend 2
(N52:0–499) for Trend 3
(N53:0–499) for Trend 4
This message reads real time trend sample data.
Refer to the emulated message structure section in
later in this chapter for details on the available
messages and their use.
PLC 5 TYPED READ
(N70:0–499) for Trend 1
(N71:0–499) for Trend 2
(N72:0–499) for Trend 3
(N73:0–499) for Trend 4
This message reads the trend sampled data, which is
the data retained when a trigger condition occurs. A
file of 70 corresponds to trend 1, 71 to trend 2, 72 to
trend 3, and 73 to trend 4.