| Type |
Real-Time Clock (RTC) master module with battery backup |
| Timekeeping Accuracy |
±2 seconds per day (quartz crystal); ±1 ppm with SNTP synchronization |
| Clock Functions |
Year, month, day, hour, minute, second, millisecond; leap year compensation |
| Battery Backup |
Lithium coin cell (CR2477); 5-year typical life at 25°C |
| Synchronization |
SNTP client (Simple Network Time Protocol) over Ethernet; supports primary/backup servers |
| Network Interface |
10/100 Mbps Ethernet port (RJ-45); supports DHCP or static IP |
| Timestamp Resolution |
1 ms for PLC events and I/O |
| Event Logging |
Supports timestamped alarm and event logs in PLC memory |
| Configuration |
Via PLC ladder logic, Hand-Held Programmer (HHP), or web browser interface |
| LED Indicators |
Power, Run, Ethernet Link/Activity, Clock Sync, Battery Status |
| Power Supply |
+5 V DC from PLC backplane |
| Power Consumption |
300 mA @ +5 V |
| Operating Temperature Range |
0°C to +60°C |
| Storage Temperature Range |
-40°C to +85°C |
| Mounting |
Series 90-30 CPU baseplate (slot 1) or expansion rack |
| Dimensions |
5.59" x 1.26" x 4.74" (142 mm x 32 mm x 120 mm) approximate |
| Weight |
0.8 lb (0.36 kg) |
| Diagnostics |
Battery low, clock fault, sync loss, Ethernet link down |
| Standards Compliance |
IEC 61131-2, CE, UL, CSA, Class I Division 2, FCC Part 15 |