Controller - Institute of Transportation Engineers

Module I/0 Module
Minimum Maximum
Description
Command Response
Message Time Message Time
0-43 128-171 Reserved for NEMA TS-2
49 177 Request Module Status 250 µs 275 us
50 178 MILLISECOND CTR. Mgmt. 222.5 µs 237.5 us
51 179 Configure Inputs 344.5 µs 6.8750 ms
52 180 Poll Raw Input Data 317.5 µs 320 µs
53 181 Poll Filtered Input Data 317.5 µs 320 µs
54 182 Poll Input Transition Buffer 300 µs 10.25 ms
55 183 Command Outputs 405 µs 410 µs
56 184 Config. Input Tracking Functions 340 µs 10.25 ms
57 185 Config. Complex Output Functions 340 µs 6.875 ms
58 186 Configure Watchdog 222.5 µs 222.5 µs
59 187 Controller Identification 222.5 µs 222.5 µs
60 188 I/O Module Identification 222.5 µs 222.5 µs
61-62 189-190 Reserved (note below)
63 191 Poll variable length raw input 317.5 us 320 us
64 192 Variable length command outputs 405 us 410 us
4.3.9.1.2
Messages 61 / 189 and 62 / 190 are reserved for ITS Cabinet Frame Types. Message 63
/ Message 191 shall be the same as Message 52 / 180 except Byte 2 of Message 180
response shall denote the following number of inputs bytes. Message 64 / 192 shall be
the same as Message 55 / 183 except Byte 2 of the Message 55 Command shall denote
the number of output data bytes along with the following output data.
4.3.9.2 Request Module Status
The Command shall be used to request FI/O status information response.
Command/response frames are as follows:
Request Module Status Command
Description msb lsb Byte Number
(Type Number = 49) 0 0 1 1 0 0 0 1 Byte 1
Reset Status Bits P E K R T M L W Byte 2
Request Module Status Response
Description msb lsb Byte Number
(Type Number = 177) 1 0 1 1 0 0 0 1 Byte 1
System Status P E K R T M L W Byte 2
SCC Receive Error Count Receive Error Count Byte 3
Standard for the ATC – Type 2070 March 29, 2001
50