393
If the destination node number is $FF, the command will be broadcast to all
nodes in the designated network. Normally a response is required with
CMND(194) and C+3 bit 15 is turned OFF. The response function is disabled
when the command is sent to all nodes.
Any of the CV-mode (FINS) commands supported by the CV-series PCs can be
sent with certain changes (see below). Refer to the CV-series PC Operation
Manual: Host Interface for details on the CV-mode commands.
The following table shows differences between the CV-mode commands used
through the Host Link System and those used with CMND(194).
Host Link FINS command
CMND(194)
ASCII
Binary
The node number, header, FCS, and
terminator are required in the command
frame. (See note 1.)
Only the command part is required. The
header code, FCS, etc. are not required.
Note
1. The node number for the SYSMAC LINK, SYSMAC NET Link, or Controller
Link Unit corresponds to the unit number for the host link interface in the PC
Setup.
2. The execution condition for the up-differentiated variation (
j
CMND(194))
might not be recognized when the mode has been switched from duplex
mode to simplex mode.
Control Data
The control words, beginning with C, specify the number of bytes of control data
to be sent, the number of bytes of response data to be received, the destination
node, and other parameters. Some control data parameters depend on whether
a transmission is being received in a SYSMAC NET Link, SYSMAC LINK, or
Controller Link System.
Word
Bits 00 to 07
Bits 08 to 15
C
Number of bytes to send (0 to 1990, i.e., $0000 to $07C6)
1
C+1
Number of bytes to receive (0 to 1990, i.e., $0000 to $07C6)
1
C+2
Destination network address
(0 to 127, i.e., $00 to $7F)
2
Bits 08 to 11:
($0 to $F)
3
Bits 12 to 15:
Set to 0.
C+3
Destination unit address
4
Destination node number
5
C+4
Bits 00 to 03:
No. of retries (0 to 15 in
hexadecimal,
i.e., $0 to $F)
Bits 04 to 07:
Set to 0.
Bits 08 to 11:
Transmission port number
($0 to $7)
Bit 12 to 14:
Set to 0.
Bit 15:
ON: No response.
OFF: Response returned.
C+5
Response monitoring time ( $0001 to $FFFF = 0.1 to 6553.5 seconds)
6
Note
1. Maximum number of bytes that can be sent or received:
System
Max. number of bytes
SYSMAC NET Link
$07C6 (1,990)
Controller Link
$
( ,
)
SYSMAC LINK
$021E (542)
SYSMAC BUS/2
$
(
)
2. Set the destination network address to $00 when transmitting within the
same network.
3. Set the BASIC Unit interrupt number when a BASIC Unit is designated.
Network Instructions
Section 5-34
Summary of Contents for CVM1D
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