53
<Precautions>
・
Do not assign the same system address to several slave units when the IF-41RS boards are
used.
・
Do not assign the same PC address to several local bus master units when the IF-41GU/ IF-41USB
boards are used. Do not assign the same system address to several slave units connected with
the local bus master unit through the local bus. Otherwise, the units will not run normally.
・
When the units are connected with a computer through the USB, the PC addresses are similar to
the IDs for unit identification. They are different from the USB addresses. The USB addresses
are assigned automatically to the USB devices by the computer and need not be specified.
・
In GP-IB control, a unit having the PC address of 31 runs in the listen-only mode.
9-4. Transmission and Reception Procedures Using IF-41RS (without using GP-620)
・
ASCII7-unit codes are used for transmission using the IF-41RS (without using the GP-620).
b
7
b6
b5
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
b
4
to b
1
0 1
2
3
4
5
6
7
0000 0 NUL
TC7
(
DLE
)
SP 0
@
P
‘
p
0001 1
TC1
(
SOH
)
DC1
!
1 A Q a q
0010 2
TC2
(
STX
)
DC2
”
2 B R b r
0011 3
TC3
(
ETX
)
DC3
#
3 C S c s
0100 4
TC4
(
EOT
)
DC4
$
4 D T d t
0101 5
TC5
(
ENQ
)
TC8
(
NAK
)
%
5 E U e u
0110 6
TC6
(
ACK
)
TC9
(
SYN
)
&
6 F V f v
0111 7 BEL
TC10
(
ETB
)
’
7 G W g w
1000 8
FE0
(
BS
)
CAN
(
8 H X h x
1001 9
FE
(
HT
)
EM
)
9 I Y i y
1010 A
FE2
(
LF
)
SUB
*
:
J Z j z
1011 B
FE3
(
VT
)
ESC
+
;
K
〔
k
{
1100 C
FE4
(
FF
)
IS4
(
FS
)
,
<
L
\(
¥
)
l
|
1101 D
FE5
(
CR
)
IS3
(
GS
)
-
=
M
〕
m
}
1110 E SO
IS2
(
RS
)
.
>
N
^
n
~
1111 F SI
IS1
(
US
)
/
?
O
_
o
DEL
Table 3 ASCII Code List