419
3. Indicates a Unit as shown in the following table.
Unit Setting
PC 00
SYSMAC NET Link or SYSMAC LINK
Unit
$10 to $1F: Unit numbers 0 to F
$FE: The local Unit
SYSMAC BUS/2 Master, BASIC Unit,
or Personal Computer Unit
$10 to $1F: Unit numbers 0 to F
SYSMAC BUS/2 Group 2 Slave $90 to $CF:
Unit number+90+10×Master
address
4. Values of $01 to$7E indicate nodes 1 to 126. Set to $00 to receive data from
within the local PC.
5. Designates the length of time that the PC retries transmission when bit 15 of
C+3 is OFF and no response is received. The default value is $0000, which
indicates 2 seconds.
6. Transmissions cannot be received from the PC executing RECV(193).
SYSMAC LINK System Set the source node number to $00 to receive from a source within the node of
the PC executing the instruction. Refer to the
SYSMAC LINK System Manual
for
details.
Word Bits 00 to 07 Bits 08 to 15
C Number of words (1 to 256 in 4-digit hexadecimal, i.e., $0001 to $0100)
C+1 Source network address
(0 to 127, i.e., $00 to $7F)
1
Bits 08 to 11: ($0 to $F)
2
Bits 12 to 15: Set to 0.
C+2 Source unit address
3
Source node number
4
C+3 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+4 Response monitoring time ( $0001 to $FFFF = 0.1 to 6553.5 seconds)
5
Note 1. Set the source network address to $00 when transmitting within the same
network. In this case, the network of the Link Unit with the lowest unit num-
ber will be selected if the PC belongs to more than one network.
2. The BASIC Unit interrupt number when a BASIC Unit is designated.
3. Same as for SYSMAC NET Link Systems. See note 3 above.
4. Values of $01 to $3E indicate nodes 1 to 62. Set to $00 to receive data from
within the local PC.
5. Designates the length of time that the PC retries transmission when bit 15 of
C+3 is OFF and no response is received. The default value is $0000, which
indicates 2 seconds.
6. Transmissions cannot be received from the PC executing RECV(193).
Precautions C through C+4 must be within the values specified above. To be able use of
RECV(193), the PC must have a SYSMAC NET Link or SYSMAC LINK Unit
mounted.
Do not change the control data during a transmission (i.e., while the correspond-
ing Port Enabled Flag in A502 is OFF).
Note Refer to page 115 for general precautions on operand data areas.
Flags ER (A50003): Content of *DM word is not BCD when set for BCD.
Network Instructions Section 5-36
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