Yaskawa Remote Serial Communication Controller LAN Node PCB for use with Microtrac DSD LAN - Manual (Page 8)

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The CHANNEL # is a byte representing
the selected channel on the Remote node.
The LOGIC MASK is a 4 byte mask (msb
at offset 2) used by the Remote node to inform it
of which bits this particular drive is interested in
(bit = 1 means the drive is interested).
Subchannel 0 corresponds to data bit 0 of the
mask lsb, and Subchannel 31 corresponds to
data bit 7 of the mask msb.
The SINK/SOURCE MASK is a 4 byte
mask (msb at offset 6) used by the Remote node
to inform it of what type of inputs are being
configured (sink type or source type). This
SINK/SOURCE field applies only to DC inputs
that have the ability to be programmed for sink or
source. When the DC input is grounded, then
the input will be a logic "1" for sink or a logic "0"
for source, respectively. The SINK/SOURCE
MASK bit should be a "0" to specify sink or a "1"
to specify source. Subchannel 0 corresponds to
data bit 0 of the mask lsb, and Subchannel 31
corresponds to data bit 7 of the mask msb.
Numeric Input Configure
(013H)
This message is sent from a drive that
wants to know the value of a numeric input
connected to a Remote node. If the numeric
value of the input changes, then a LAN message
must be sent back to the drive. A LAN message
must also be sent at regular 4 second intervals
fixed at the Remote node; the drive expects
periodic updates, and will take appropriate action
if it is not updated within 5 seconds.
[ MSG TYPE = 013H | CHANNEL # |
SUBCHANNEL # |
0 1 2
DCP ]
3
The CHANNEL # is a byte representing
the selected channel of the Remote node.
The SUBCHANNEL # is a byte
representing which subchannel is used.
The DCP is the decimal point location
expected when inputting the numeric value. The
DCP value is equal to the number of digits to the
right of the decimal point.
Display Node Request
(020H)
This is the request from a Remote node to
the drive for display information. This request is
made once and the drive responds by sending
one of the Display ASCII Response messages to
the appropriate Remote node, then updates the
information on a regular basis using one of the
Display Response messages, with no further
requests necessary. This type of message is
used whether the Remote node is modifying, or
only displaying a particular piece of data. The
drive will send updates when the data changes
and at regular 4 second intervals. If the Remote
node does not receive an update within 5
seconds, appropriate action should be taken,
because the last received data may not be valid.
When the operator changes the requested
display at the Remote node, the Remote node
must first cancel the current request (with the
Display Abort message) before issuing the new
Display Node Request. A particular RDU may
only be receiving updates for one specific item of
data at a time.
[ MSG TYPE = 020H | CHANNEL # |
SUBCHANNEL # |
0 1 2-3
RDU # ]
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The CHANNEL # must be 065H.
The Subchannel # must be the desired
Control Display Unit (CDU) Function Number
defined in the PAC diagram. The msb of the
SUBCHANNEL # is at offset 2.
The RDU # indicates which Remote node
channel the information is to be periodically sent
to. This number is used to identify the data in the
Display Response messages.
Display Abort
RD 790-30