Справочник Пользователя для Delta Tau GEO BRICK LV
Geo Brick LV User Manual
PinOuts and Software Setup
146
RS232: Serial Communication Port
An optional serial RS-232 communication port is available on the Geo Brick LVs. This port can be used
as a primary communication mean or employed as a secondary port that allows simultaneous
communication.
as a primary communication mean or employed as a secondary port that allows simultaneous
communication.
RS-232: D-Sub DE-9F
Mating: D-Sub DE-9M
1
2
3
4
5
6
7
8
9
N
.C
.
D
T
R
T
X
D
C
T
S
R
X
D
R
T
S
D
S
R
N
.C
.
G
N
D
Pin# Symbol
Function
Description
Notes
1
N.C.
NC
2
TXD
Output
Receive data
Host transmit Data
3
RXD
Input
Send data
Host receive Data
4
DSR
Bi-directional Data set ready
Tied to “DTR”
5
GND
Common
Common GND
6
DTR
Bi-directional Data term ready Tied to “DSR”
7
CTS
Input
Clear to send
Host ready bit
8
RTS
Output
Req. to send
PMAC ready bit
9
N.C
NC
The baud rate for the RS-232 serial port is set by variable I54. At power-up reset, The Geo Brick LV sets
the active baud based on the setting of I54 and the CPU speed I52. Note that the baud rate frequency is
divided down from the CPU’s operational frequency. The factory default baud rate is 38400. This baud
rate will be selected automatically on re-initialization of the Geo Brick LV, either in hardware using the
re-initialization (RESET SW) button or in software using the $$$*** command.
To change the baud rate setting on the Geo Brick LV, set I54 to the corresponding value of desired
frequency. Issue a SAVE and recycle power on the unit. For odd baud rate settings, refer to the Turbo
Software Reference Manual.
I54 Baud Rate I54 Baud Rate
8
9600
12
38,400
9
14,400
13
57,600
10
19,200
14
76,800
11
28,800
15
115,200
Note
I54=12 (38400 baud) is the factory default setting