ProSoft Technology ProTalk PTQ-PDPMV1 User Manual page 178

Mailbox Messaging
User Manual
6.3 Receiving Mailbox Message Responses from PTQ Module
After a mailbox message has been sent, a response from the command, usually
containing the requested data or the status of the command, is returned from the
PTQ module to the processor. The response is returned from the PTQ-PDPMV1
via the PROFIBUS Input data block.
Note: This is for the original layout with the default values; it changes if Slave diagnostics are
chosen in PCB.
Remembering the PROFIBUS Input Data Memory Map:
Quantum Unity Address
Address (Example)
(Example)
41101 %MW1101
- -
41163 %MW1163
41164 %MW1164
41165 %MW1165
41157 %MW1157
41158 %MW1158
41159 %MW1159
41180 %MW1180
- -
41223 %MW1223
41224 %MW1224
- -
41101+N+1 %MW1101+N+1
The important section relevant to the Mailbox Messaging discussion is the
Incoming Mailbox Data section (Word Offsets 79 to 222). Within this section of
data, the following structure exists:
Page 178 of 306
PROFIBUS DP Master Network Interface Module for Quantum
Relative Description
Word
Offset
0 Configuration, Status and Control data
-
73 Number of Messages in the In Mailbox Queue
74 Number of Messages in the Out Mailbox Queue
75 Number of Messages in the Alarm Queue
76 Last Out Mailbox Message ID processed from
Output Image
77 Current In Mailbox Control Index
78 Current Alarm Control Index
79 Incoming Mailbox Message data
-
222
223 PROFIBUS Input Data
-
N
PTQ-PDPMV1 ♦ Quantum Platform
ProSoft Technology, Inc.
August 12, 2014