PLX30 Series
ASCII Protocol
Ethernet and Serial Gateways
User Manual
ProSoft Technology, Inc.
Page 165 of 200
September 19, 2012
8.3
ASCII Diagnostics
8.3.1 PCB Diagnostics
The best way to troubleshoot the MBS driver is to use ProSoft Configuration
Builder to access the diagnostic capabilities of the gateway through the Ethernet
debug port. For instructions on how to access
Diagnostics
Diagnostics in ProSoft Configuration Builder
(page 36).
8.3.2 ASCII Status Data in Upper Memory
Each ASCII port has an associated status data area located in the
gateway’s
upper memory. The Data Map functionality of the gateway can be used to map
this data into the normal user data range of the gateway
(page 27).
The following table lists the starting addresses in upper memory where the status
data for each ASCII port can be found.
Port
Gateway Starting Register for Status Data
1
13000
2*
13010
3*
13020
4*
13030
*Status data for Ports 2 through 4 are only present in 4-port ASCII gateways.
Port [x] Status Data
Status Register Offset
Description
0
Receive state:
-1 = Listening for data
1 = Receiving port data
1
Total receive character count
2
Total receive message count
3
Transmit state:
0 = Waiting for Data to Send
1 = RTS On
2 = RTS Timeout
3 = Sending data
4 = Waiting for RTS Off
5 = RTS turned off
30, 31, and 32 = Intercharacter Delay
100 and 101 = Message Delay before Transmit
4
Total transmit character count
5
Total transmit message count
6
Reserved
7 to 9
No valid data
