Yaskawa Remote Serial Communication Controller LAN Node PCB for use with Microtrac DSD LAN - Manual (Page 10)

10
Display Value Response
(024H)
This message is sent from the drive to the
Remote node and channel when the data
changes and at regular 4 second intervals until
the display is aborted. 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.
[ MSG TYPE = 024H | RDU # | VALUE ]
0 1 2-5
The RDU # indicates which Remote node
channel is to receive this information.
The VALUE contains the most recent
value of the data in IEEE single precision floating
point format; the msb is at offset 2.
RDU Lockout Command
(025H)
An RDU in an "unlocked" state may have
its display modified by a keypad connected to
any other RDU connected to the same Remote
node. An RDU in a "locked" state may not have
its display modified by a keypad connected to
any other RDU connected to the same Remote
node. At power-up, the default state of all RDUs
is "unlocked". This message is sent by a drive to
the Remote node to set the default state of a
particular RDU to "locked".
[ MSG TYPE = 025H | RDU # ]
0 1
The RDU # is the specific Remote node
channel that the data is intended for.
RDU Value Change
(026H)
This message is sent from a Remote
node to a drive when an RDU wants to change
the value of a numeric parameter on the drive.
This message will only be sent after the RDU's
ENTER key is pressed.
[ MSG TYPE = 026H | CHANNEL # |
SUBCHANNEL # |
0 1 2-3
RDU # | VALUE ]
4 5-8
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 coming from.
The VALUE contains the desired new
value of the parameter and is in IEEE single
precision floating point format; the msb is at
offset 5.
RDU Configuration
(027H)
This message is sent by the drive to the
Remote node at power-up to initialize the default
message menu items. The default menu items
(and these messages) are determined through
the PAC source program. The drive will send
one of these messages for each menu item to be
initialized.
[ MSG TYPE = 027H | RDU # | MENU ITEM # |
0 1 2
CHANNEL # | SUBCHANNEL # | DCP ]
3 4-5 6
The RDU # indicates which Remote node
channel the information is intended for.
The MENU ITEM # is a vlaue between 1
and the maximum menu size, which points to the
proper parameter within the RDU.
The CHANNEL # must be 065H.
The SUBCHANNEL # must be the
desired Control Display Unit (CDU) Function
RD 790-30