Okay..so it must be something wrong with that network configuration because the same motion sensor added at home.
Tue 10/25/2016 08:02:03 AM : [37 9d 72 ] Added to list of devices to link to ISY
Tue 10/25/2016 08:02:03 AM : [iNST-TX-I1 ] 02 62 37 9D 72 0F 0D 00
Tue 10/25/2016 08:02:03 AM : [iNST-ACK ] 02 62 37.9D.72 0F 0D 00 06 (00)
Tue 10/25/2016 08:02:12 AM : [iNST-TX-I1 ] 02 62 37 9D 72 0F 0D 00
Tue 10/25/2016 08:02:12 AM : [iNST-ACK ] 02 62 37.9D.72 0F 0D 00 06 (00)
Tue 10/25/2016 08:02:13 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 0D 02 (02)
Tue 10/25/2016 08:02:13 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:13 AM : [iNST-TX-I1 ] 02 62 37 9D 72 0F 10 00
Tue 10/25/2016 08:02:13 AM : [iNST-ACK ] 02 62 37.9D.72 0F 10 00 06 ID-REQ (00)
Tue 10/25/2016 08:02:21 AM : [iNST-TX-I1 ] 02 62 37 9D 72 0F 10 00
Tue 10/25/2016 08:02:21 AM : [iNST-ACK ] 02 62 37.9D.72 0F 10 00 06 ID-REQ (00)
Tue 10/25/2016 08:02:23 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 23 10 00 ID-REQ (00)
Tue 10/25/2016 08:02:23 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=0
Tue 10/25/2016 08:02:23 AM : [iNST-SRX ] 02 50 37.9D.72 10.01.44 8B 02 44 (44)
Tue 10/25/2016 08:02:23 AM : [std-Broadcast] 37.9D.72-->10.01.44, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:23 AM : [37 9D 72 0 ] Calibrating engine version
Tue 10/25/2016 08:02:23 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 00 00 00 01 00 00 00 00 00 00 00 00 D0
Tue 10/25/2016 08:02:23 AM : [iNST-ACK ] 02 62 00.00.00 00 00 00 15 (00)
Tue 10/25/2016 08:02:32 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 00 00 00 01 00 00 00 00 00 00 00 00 D0
Tue 10/25/2016 08:02:32 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 00 00 00 01 00 00 00 00 00 00 00 00 D0 06 (00)
Tue 10/25/2016 08:02:33 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 2F 00 (00)
Tue 10/25/2016 08:02:33 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:34 AM : [iNST-ERX ] 02 51 37 9D 72 32 B1 BC 12 2F 00 00 01 0F FF 01 E2 01 2B 50 C9 03 00 00 97
Tue 10/25/2016 08:02:34 AM : [Ext-Direct ] 37.9D.72-->ISY/PLM Group=0, Max Hops=2, Hops Left=0
Tue 10/25/2016 08:02:34 AM : [37 9D 72 0 ] Using Database Link Table offset 0x0FF8 (reported 0x0FF8)
Tue 10/25/2016 08:02:34 AM : [37 9D 72 1 ] Start : Adding device to ISY
Tue 10/25/2016 08:02:34 AM : [37 9D 72 1 ] Finish : Adding device to ISY was Successful
Tue 10/25/2016 08:02:34 AM : [37 9D 72 1 ] Link 0 : 0FF8 [E20132B1BC010001] Saving [E20132B1BC010001]
Tue 10/25/2016 08:02:34 AM : [37 9D 72 2 ] Start : Adding device to ISY
Tue 10/25/2016 08:02:34 AM : [37 9D 72 2 ] Finish : Adding device to ISY was Successful
Tue 10/25/2016 08:02:34 AM : [37 9D 72 2 ] Link 1 : 0FF0 [E20232B1BC010002] Saving [E20232B1BC010002]
Tue 10/25/2016 08:02:34 AM : [37 9D 72 3 ] Start : Adding device to ISY
Tue 10/25/2016 08:02:34 AM : [37 9D 72 3 ] Finish : Adding device to ISY was Successful
Tue 10/25/2016 08:02:34 AM : [37 9D 72 3 ] Link 2 : 0FE8 [E20332B1BC010003] Saving [E20332B1BC010003]
Tue 10/25/2016 08:02:34 AM : [37 9D 72 0 ] Successfully added device
Tue 10/25/2016 08:02:34 AM : [All ] Writing 24 bytes to devices
Tue 10/25/2016 08:02:35 AM : [37 9D 72 1 ] Link 0 : 0FF8 [E20132B1BC010001] Writing [E20132B1BC010001]
Tue 10/25/2016 08:02:35 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 02 0F FF 08 E2 01 32 B1 BC 01 00 01 35
Tue 10/25/2016 08:02:35 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 02 0F FF 08 E2 01 32 B1 BC 01 00 01 35 06 (00)
Tue 10/25/2016 08:02:35 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 2F 00 (00)
Tue 10/25/2016 08:02:35 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:35 AM : [MNG-LNK-RSP ] 02 6F 41 A2 01 37 9D 72 10 01 44 06
Tue 10/25/2016 08:02:35 AM : [PLM ] Group 1 : Writing Responder Link matching [37 9D 72 1 ] Link 0 : 0FF8 [E20132B1BC010001]
Tue 10/25/2016 08:02:36 AM : [37 9D 72 1 ] Link 1 : 0FF0 [E20232B1BC010002] Writing [E20232B1BC010002]
Tue 10/25/2016 08:02:36 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 02 0F F7 08 E2 02 32 B1 BC 01 00 02 3B
Tue 10/25/2016 08:02:36 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 02 0F F7 08 E2 02 32 B1 BC 01 00 02 3B 06 (00)
Tue 10/25/2016 08:02:36 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 2F 00 (00)
Tue 10/25/2016 08:02:36 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:37 AM : [MNG-LNK-RSP ] 02 6F 41 A2 02 37 9D 72 10 01 44 06
Tue 10/25/2016 08:02:37 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 23 2F 00 (00)
Tue 10/25/2016 08:02:37 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=0
Tue 10/25/2016 08:02:37 AM : [PLM ] Group 2 : Writing Responder Link matching [37 9D 72 1 ] Link 1 : 0FF0 [E20232B1BC010002]
Tue 10/25/2016 08:02:37 AM : [37 9D 72 1 ] Link 2 : 0FE8 [E20332B1BC010003] Writing [E20332B1BC010003]
Tue 10/25/2016 08:02:37 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 02 0F EF 08 E2 03 32 B1 BC 01 00 03 41
Tue 10/25/2016 08:02:37 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 02 0F EF 08 E2 03 32 B1 BC 01 00 03 41 06 (00)
Tue 10/25/2016 08:02:37 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 2F 00 (00)
Tue 10/25/2016 08:02:37 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:38 AM : [MNG-LNK-RSP ] 02 6F 41 A2 03 37 9D 72 10 01 44 06
Tue 10/25/2016 08:02:38 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 23 2F 00 (00)
Tue 10/25/2016 08:02:38 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=0
Tue 10/25/2016 08:02:38 AM : [iNST-DUP ] Previous message ignored.
Tue 10/25/2016 08:02:38 AM : [PLM ] Group 3 : Writing Responder Link matching [37 9D 72 1 ] Link 2 : 0FE8 [E20332B1BC010003]
Tue 10/25/2016 08:02:38 AM : [37 9D 72 1 ] Link 3 : 0FE0 [0000000000000000] Writing [00..............]
Tue 10/25/2016 08:02:38 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 02 0F E7 08 00 00 00 00 00 00 00 00 D1
Tue 10/25/2016 08:02:38 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 02 0F E7 08 00 00 00 00 00 00 00 00 D1 06 (00)
Tue 10/25/2016 08:02:39 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 2F 00 (00)
Tue 10/25/2016 08:02:39 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:39 AM : [37 9D 72 1 ] Link 4 : 0FD8 : Writing High Water Byte
Tue 10/25/2016 08:02:39 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 00 0F DF 01 00 00 00 00 00 00 00 00 E2
Tue 10/25/2016 08:02:39 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 00 0F DF 01 00 00 00 00 00 00 00 00 E2 06 (00)
Tue 10/25/2016 08:02:39 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 2F 00 (00)
Tue 10/25/2016 08:02:39 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
Tue 10/25/2016 08:02:40 AM : [iNST-ERX ] 02 51 37 9D 72 32 B1 BC 12 2F 00 00 01 0F DF 01 00 00 00 00 00 00 00 00 E1
Tue 10/25/2016 08:02:40 AM : [Ext-Direct ] 37.9D.72-->ISY/PLM Group=0, Max Hops=2, Hops Left=0
Tue 10/25/2016 08:02:40 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 00 0F DF 01 00 00 00 00 00 00 00 00 E2
Tue 10/25/2016 08:02:40 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 00 0F DF 01 00 00 00 00 00 00 00 00 E2 06 (00)
Tue 10/25/2016 08:02:43 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2F 2F 00 (00)
Tue 10/25/2016 08:02:43 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=3
Tue 10/25/2016 08:02:44 AM : [iNST-ERX ] 02 51 37 9D 72 32 B1 BC 12 2F 00 00 01 0F DF 01 00 00 00 00 00 00 00 00 E1
Tue 10/25/2016 08:02:44 AM : [Ext-Direct ] 37.9D.72-->ISY/PLM Group=0, Max Hops=2, Hops Left=0
Tue 10/25/2016 08:02:44 AM : [iNST-TX-I2CS] 02 62 37 9D 72 1F 2F 00 00 02 0F DF 08 00 00 00 00 00 00 00 00 D9
Tue 10/25/2016 08:02:44 AM : [iNST-ACK ] 02 62 37.9D.72 1F 2F 00 00 02 0F DF 08 00 00 00 00 00 00 00 00 D9 06 (00)
Tue 10/25/2016 08:02:45 AM : [iNST-SRX ] 02 50 37.9D.72 32.B1.BC 2B 2F 00 (00)
Tue 10/25/2016 08:02:45 AM : [std-Direct Ack] 37.9D.72-->ISY/PLM Group=0, Max Hops=3, Hops Left=2
It's not like the ISY(at other location) can't see the motion sensor..communication fails.
Note I was as far as I could be from the ISY when I tested the same motion sensor home