ICP DAS USA I-7521 User Manual page 139

Application 7: 8-channel long term event counters (Master type)
 Refer to Applications 1 and 2 for more information
 The X100 daughter supports 8 DI channels. The I-7521+X100
combination can read and analyze the 8 event counters in real time.
The timing diagram of the event-counter will be latched until a clear
command is sent by the Host PC
 All analysis operations are performed in the I-7521 module. The Host
PC only reads the timing values of the event counter as past of its
system monitoring functions
 Refer to the 7521ODM3.c file for the source code of the firmware
I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527 User's Manual,Ver2.5 Aug.2015
I-7520
RS-232
I-7521
(#01)
X8
Event Counter
RS-232 Device
RS-485
X8
Event Counter
I-7521
(#AA)
RS-232 Device
139